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VS09: Reduced Speed Zone Warning / Lane Closure

This service package provides connected vehicles that are approaching a reduced speed zone with information on the zone’s posted speed limit and/or if the configuration of the roadway is altered (e.g., lane closures, lane shifts). Reduced speed zones include (but are not be limited to) construction/work zones, school zones, pedestrian crossing areas, and incorporated zones (e.g., rural towns). The connected vehicle uses the revised speed limit along with any applicable changed roadside configuration information to determine whether to provide an alert or warning to the driver. Additionally, to provide warnings to non-equipped vehicles, infrastructure equipment measures the speed of the approaching vehicles and if greater than the reduced speed zone posted speed limit will provide warning signage. It will provide an alert to drivers in advance when aggressive braking is required to reduce to the posted speed limit.

Relevant Regions: Australia, Canada, European Union, and United States

Enterprise

Development Stage Roles and Relationships

Installation Stage Roles and Relationships

Operations and Maintenance Stage Roles and Relationships
(hide)

Source Destination Role/Relationship
Basic Vehicle MaintainerBasic Vehicle Maintains
Basic Vehicle ManagerBasic Vehicle Manages
Basic Vehicle ManagerDriver System Usage Agreement
Basic Vehicle OwnerBasic Vehicle Maintainer System Maintenance Agreement
Basic Vehicle OwnerBasic Vehicle Manager Operations Agreement
Basic Vehicle OwnerDriver Application Usage Agreement
Basic Vehicle OwnerDriver Vehicle Operating Agreement
Basic Vehicle OwnerVehicle Maintainer Maintenance Data Exchange Agreement
Basic Vehicle OwnerVehicle Owner Expectation of Data Provision
Basic Vehicle OwnerVehicle User Service Usage Agreement
Basic Vehicle SupplierBasic Vehicle Owner Warranty
Connected Vehicle Roadside Equipment MaintainerConnected Vehicle Roadside Equipment Maintains
Connected Vehicle Roadside Equipment ManagerConnected Vehicle Roadside Equipment Manages
Connected Vehicle Roadside Equipment ManagerConnected Vehicle Roadside Equipment Operator System Usage Agreement
Connected Vehicle Roadside Equipment OperatorConnected Vehicle Roadside Equipment Operates
Connected Vehicle Roadside Equipment OwnerConnected Vehicle Roadside Equipment Maintainer System Maintenance Agreement
Connected Vehicle Roadside Equipment OwnerConnected Vehicle Roadside Equipment Manager Operations Agreement
Connected Vehicle Roadside Equipment OwnerDriver Application Usage Agreement
Connected Vehicle Roadside Equipment OwnerMaint and Constr Center Personnel Application Usage Agreement
Connected Vehicle Roadside Equipment OwnerMaint and Constr Management Center Maintainer Maintenance Data Exchange Agreement
Connected Vehicle Roadside Equipment OwnerMaint and Constr Management Center Owner Information Exchange Agreement
Connected Vehicle Roadside Equipment OwnerMaint and Constr Management Center User Service Usage Agreement
Connected Vehicle Roadside Equipment OwnerTraffic Management Center Maintainer Maintenance Data Exchange Agreement
Connected Vehicle Roadside Equipment OwnerTraffic Management Center Owner Information Exchange Agreement
Connected Vehicle Roadside Equipment OwnerTraffic Management Center User Service Usage Agreement
Connected Vehicle Roadside Equipment OwnerTraffic Operations Personnel Application Usage Agreement
Connected Vehicle Roadside Equipment OwnerVehicle Maintainer Maintenance Data Exchange Agreement
Connected Vehicle Roadside Equipment OwnerVehicle Owner Expectation of Information Provision
Connected Vehicle Roadside Equipment OwnerVehicle User Service Usage Agreement
Connected Vehicle Roadside Equipment SupplierConnected Vehicle Roadside Equipment Owner Warranty
DriverBasic Vehicle Operates
DriverVehicle Operates
ITS Roadway Equipment MaintainerITS Roadway Equipment Maintains
ITS Roadway Equipment ManagerITS Roadway Equipment Manages
ITS Roadway Equipment ManagerMaint and Constr Field Personnel System Usage Agreement
ITS Roadway Equipment OwnerConnected Vehicle Roadside Equipment Maintainer Maintenance Data Exchange Agreement
ITS Roadway Equipment OwnerConnected Vehicle Roadside Equipment Operator Application Usage Agreement
ITS Roadway Equipment OwnerConnected Vehicle Roadside Equipment Owner Information Exchange and Action Agreement
ITS Roadway Equipment OwnerConnected Vehicle Roadside Equipment User Service Usage Agreement
ITS Roadway Equipment OwnerITS Roadway Equipment Maintainer System Maintenance Agreement
ITS Roadway Equipment OwnerITS Roadway Equipment Manager Operations Agreement
ITS Roadway Equipment OwnerMaint and Constr Center Personnel Application Usage Agreement
ITS Roadway Equipment OwnerMaint and Constr Management Center Maintainer Maintenance Data Exchange Agreement
ITS Roadway Equipment OwnerMaint and Constr Management Center Owner Information Exchange Agreement
ITS Roadway Equipment OwnerMaint and Constr Management Center User Service Usage Agreement
ITS Roadway Equipment OwnerMulti-Access Edge Computing Operator Application Usage Agreement
ITS Roadway Equipment OwnerTraffic Management Center Maintainer Maintenance Data Exchange Agreement
ITS Roadway Equipment OwnerTraffic Management Center Owner Information Exchange Agreement
ITS Roadway Equipment OwnerTraffic Management Center User Service Usage Agreement
ITS Roadway Equipment OwnerTraffic Operations Personnel Application Usage Agreement
ITS Roadway Equipment SupplierITS Roadway Equipment Owner Warranty
Maint and Constr Center PersonnelMaint and Constr Management Center Operates
Maint and Constr Field PersonnelITS Roadway Equipment Operates
Maint and Constr Management Center MaintainerMaint and Constr Management Center Maintains
Maint and Constr Management Center ManagerMaint and Constr Center Personnel System Usage Agreement
Maint and Constr Management Center ManagerMaint and Constr Management Center Manages
Maint and Constr Management Center OwnerConnected Vehicle Roadside Equipment Maintainer Maintenance Data Exchange Agreement
Maint and Constr Management Center OwnerConnected Vehicle Roadside Equipment Operator Application Usage Agreement
Maint and Constr Management Center OwnerConnected Vehicle Roadside Equipment Owner Information Exchange Agreement
Maint and Constr Management Center OwnerConnected Vehicle Roadside Equipment User Service Usage Agreement
Maint and Constr Management Center OwnerITS Roadway Equipment Maintainer Maintenance Data Exchange Agreement
Maint and Constr Management Center OwnerITS Roadway Equipment Owner Information Exchange Agreement
Maint and Constr Management Center OwnerITS Roadway Equipment User Service Usage Agreement
Maint and Constr Management Center OwnerMaint and Constr Field Personnel Application Usage Agreement
Maint and Constr Management Center OwnerMaint and Constr Management Center Maintainer System Maintenance Agreement
Maint and Constr Management Center OwnerMaint and Constr Management Center Manager Operations Agreement
Maint and Constr Management Center OwnerMulti-Access Edge Computing Operator Application Usage Agreement
Maint and Constr Management Center OwnerTraffic Management Center Maintainer Maintenance Data Exchange Agreement
Maint and Constr Management Center OwnerTraffic Management Center Owner Information Exchange Agreement
Maint and Constr Management Center OwnerTraffic Management Center User Service Usage Agreement
Maint and Constr Management Center OwnerTraffic Operations Personnel Application Usage Agreement
Maint and Constr Management Center SupplierMaint and Constr Management Center Owner Warranty
Multi-Access Edge Computing ManagerMulti-Access Edge Computing Operator System Usage Agreement
Multi-Access Edge Computing OwnerDriver Application Usage Agreement
Multi-Access Edge Computing OwnerMaint and Constr Center Personnel Application Usage Agreement
Multi-Access Edge Computing OwnerTraffic Operations Personnel Application Usage Agreement
Multi-Access Edge Computing OwnerVehicle Owner Expectation of Information Provision
TIC OperatorTransportation Information Center Operates
Traffic Management Center MaintainerTraffic Management Center Maintains
Traffic Management Center ManagerTraffic Management Center Manages
Traffic Management Center ManagerTraffic Operations Personnel System Usage Agreement
Traffic Management Center OwnerConnected Vehicle Roadside Equipment Maintainer Maintenance Data Exchange Agreement
Traffic Management Center OwnerConnected Vehicle Roadside Equipment Operator Application Usage Agreement
Traffic Management Center OwnerConnected Vehicle Roadside Equipment Owner Information Exchange Agreement
Traffic Management Center OwnerConnected Vehicle Roadside Equipment User Service Usage Agreement
Traffic Management Center OwnerITS Roadway Equipment Maintainer Maintenance Data Exchange Agreement
Traffic Management Center OwnerITS Roadway Equipment Owner Information Exchange Agreement
Traffic Management Center OwnerITS Roadway Equipment User Service Usage Agreement
Traffic Management Center OwnerMaint and Constr Center Personnel Application Usage Agreement
Traffic Management Center OwnerMaint and Constr Field Personnel Application Usage Agreement
Traffic Management Center OwnerMaint and Constr Management Center Maintainer Maintenance Data Exchange Agreement
Traffic Management Center OwnerMaint and Constr Management Center Owner Information Exchange Agreement
Traffic Management Center OwnerMaint and Constr Management Center User Service Usage Agreement
Traffic Management Center OwnerMulti-Access Edge Computing Operator Application Usage Agreement
Traffic Management Center OwnerTIC Operator Application Usage Agreement
Traffic Management Center OwnerTraffic Management Center Maintainer System Maintenance Agreement
Traffic Management Center OwnerTraffic Management Center Manager Operations Agreement
Traffic Management Center OwnerTransportation Information Center Maintainer Maintenance Data Exchange Agreement
Traffic Management Center OwnerTransportation Information Center Owner Information Exchange Agreement
Traffic Management Center OwnerTransportation Information Center User Service Usage Agreement
Traffic Management Center SupplierTraffic Management Center Owner Warranty
Traffic Operations PersonnelTraffic Management Center Operates
Transportation Information Center MaintainerTransportation Information Center Maintains
Transportation Information Center ManagerTIC Operator System Usage Agreement
Transportation Information Center ManagerTransportation Information Center Manages
Transportation Information Center OwnerDriver Application Usage Agreement
Transportation Information Center OwnerTraffic Management Center Maintainer Maintenance Data Exchange Agreement
Transportation Information Center OwnerTraffic Management Center Owner Information Exchange Agreement
Transportation Information Center OwnerTraffic Management Center User Service Usage Agreement
Transportation Information Center OwnerTraffic Operations Personnel Application Usage Agreement
Transportation Information Center OwnerTransportation Information Center Maintainer System Maintenance Agreement
Transportation Information Center OwnerTransportation Information Center Manager Operations Agreement
Transportation Information Center OwnerVehicle Maintainer Maintenance Data Exchange Agreement
Transportation Information Center OwnerVehicle Owner Information Exchange Agreement
Transportation Information Center OwnerVehicle User Service Usage Agreement
Transportation Information Center SupplierTransportation Information Center Owner Warranty
Vehicle MaintainerVehicle Maintains
Vehicle ManagerDriver System Usage Agreement
Vehicle ManagerVehicle Manages
Vehicle OwnerBasic Vehicle Maintainer Maintenance Data Exchange Agreement
Vehicle OwnerBasic Vehicle Owner Expectation of Data Provision
Vehicle OwnerBasic Vehicle User Service Usage Agreement
Vehicle OwnerConnected Vehicle Roadside Equipment Maintainer Maintenance Data Exchange Agreement
Vehicle OwnerConnected Vehicle Roadside Equipment Operator Application Usage Agreement
Vehicle OwnerConnected Vehicle Roadside Equipment Owner Expectation of Data Provision
Vehicle OwnerConnected Vehicle Roadside Equipment User Service Usage Agreement
Vehicle OwnerDriver Application Usage Agreement
Vehicle OwnerDriver Vehicle Operating Agreement
Vehicle OwnerMulti-Access Edge Computing Operator Application Usage Agreement
Vehicle OwnerMulti-Access Edge Computing Owner Expectation of Data Provision
Vehicle OwnerTIC Operator Application Usage Agreement
Vehicle OwnerTransportation Information Center Maintainer Maintenance Data Exchange Agreement
Vehicle OwnerTransportation Information Center Owner Information Exchange Agreement
Vehicle OwnerTransportation Information Center User Service Usage Agreement
Vehicle OwnerVehicle Maintainer System Maintenance Agreement
Vehicle OwnerVehicle Manager Operations Agreement
Vehicle SupplierVehicle Owner Warranty

Functional

This service package includes the following Functional View PSpecs:

Physical Object Functional Object PSpec Number PSpec Name
Connected Vehicle Roadside Equipment RSE Intersection Management 1.1.1.6 Collect Vehicle Roadside Safety Data
1.1.2.6 Process Collected Vehicle Safety Data
1.1.6 Collect Vehicle Traffic Surveillance Data
1.2.7.3.1 Process In-vehicle Signage Data
1.2.7.3.2 Process Vehicle Safety and Environmental Data for Output
1.2.7.3.4 Manage Connected Signal Priority and Preemption Requests
1.2.7.3.5 Process Intersection Safety Data
1.5.10 Collect Vehicle Emissions Messages
RSE Speed Warning 1.1.1.6 Collect Vehicle Roadside Safety Data
1.1.2.6 Process Collected Vehicle Safety Data
1.1.6 Collect Vehicle Traffic Surveillance Data
1.1.7 Collect Vehicle Environmental Data
1.2.7.3.1 Process In-vehicle Signage Data
1.2.7.3.2 Process Vehicle Safety and Environmental Data for Output
6.7.3.3 Provide Short Range Traveler Information
9.2.3.8 Collect Connected Vehicle Field Equipment Status
ITS Roadway Equipment Roadway Signal Control 1.1.1.1 Process Traffic Sensor Data
1.2.7.1.1 Process Indicator Output Data for Roads
1.2.7.1.2 Manage Local Signal Priority and Preemption Requests
1.2.7.1.3 Provide Device Interface for Field Management Stations
1.2.7.1.4 Process Signal Control Conflict Monitoring
1.2.7.2.1 Monitor Roadside Equipment Operation
1.2.7.2.4 Provide Device Interface to Other Roadway Devices
Roadway Speed Monitoring and Warning 1.1.1.1 Process Traffic Sensor Data
1.2.7.2.5 Process Roadway Information Data
9.3.3.1 Collect Vehicle Speed
9.3.3.4 Support Vehicle Speed Enforcement
Maint and Constr Management Center MCM Reduced Speed Zone Warning 9.2.3.5 Collect Roadside Equipment Status
9.2.5 Provide M&C Center Personnel Interface for Maint
9.3.1.1 Operate Work Zone Devices
9.3.2.3 Generate Work Zone Information for Distribution
9.3.3.2 Monitor Vehicle Speed in Work Zone
Traffic Management Center TMC Speed Warning 1.1.2.5 Process Vehicle Situation Data
1.2.4.3 Output In-vehicle Signage Data
1.2.4.4 Output Roadway Information Data
1.2.6.1 Maintain Traffic and Sensor Static Data
1.2.6.2 Provide Static Data Store Output Interface
1.2.8 Collect Traffic Field Equipment Fault Data
9.3.3.3 Manage Vehicle Speed on Roadway
Transportation Information Center TIC Situation Data Management 6.2.1 Collect Misc Traveler Information
6.2.2 Collect Traffic Data
6.2.5 Collect Situation and Sensor Data From Vehicles
6.5.8 Provide Operational Data for Other Centers
6.5.9 Provide Traveler Alert Interface
6.9 Manage Traveler Info Archive Data
TIC Traffic Control Dissemination 6.2.2 Collect Traffic Data
6.5.1 Provide Broadcast Data Interface
6.5.2 Provide Interactive Data Interface
Vehicle Vehicle Basic Safety Communication 3.1.1 Produce Collision and Crash Avoidance Data
3.1.3 Process Vehicle On-board Data
3.1.4 Communicate with Remote Vehicles
3.1.6 Provide Vehicle Acceleration and Deceleration Inputs
3.2.3.2 Manage Platoon Following
3.2.3.3 Process Data for Vehicle Actuators
3.2.3.5.1 Process General Vehicle Sensor Data
3.2.4 Process Sensor Data for Automatic Vehicle Operations
6.7.1.3 Process Vehicle Location Data
6.7.1.4 Update Vehicle Navigable Map Database
6.7.3.2 Provide Driver Information Interface
Vehicle Control Warning 3.1.1 Produce Collision and Crash Avoidance Data
3.1.3 Process Vehicle On-board Data
3.2.3.3 Process Data for Vehicle Actuators
3.2.3.5.1 Process General Vehicle Sensor Data
6.7.3.2 Provide Driver Information Interface
Vehicle Intersection Movement 3.1.1 Produce Collision and Crash Avoidance Data
3.1.2 Carry-out Safety Analysis
3.1.3 Process Vehicle On-board Data
3.1.4 Communicate with Remote Vehicles
3.1.6 Provide Vehicle Acceleration and Deceleration Inputs
3.2.1 Provide Driver Interface
3.2.3.1 Provide Command Interface
3.2.3.3 Process Data for Vehicle Actuators
3.2.3.5.1 Process General Vehicle Sensor Data
3.2.4 Process Sensor Data for Automatic Vehicle Operations
3.3.2 Build Automatic Collision Notification Message
6.7.1.3 Process Vehicle Location Data
6.7.1.4 Update Vehicle Navigable Map Database
6.7.3.1 Provide Driver with Personal Travel Information
6.7.3.2 Provide Driver Information Interface
Vehicle Situation Data Monitoring 3.1.3 Process Vehicle On-board Data
Vehicle Speed Management Assist 3.1.3 Process Vehicle On-board Data
6.7.1.3 Process Vehicle Location Data
6.7.1.4 Update Vehicle Navigable Map Database
6.7.3.1 Provide Driver with Personal Travel Information
6.7.3.2 Provide Driver Information Interface
Vehicle Traveler Information Reception 3.1.3 Process Vehicle On-board Data
3.1.4 Communicate with Remote Vehicles
3.2.3.3 Process Data for Vehicle Actuators
6.7.1.3 Process Vehicle Location Data
6.7.1.4 Update Vehicle Navigable Map Database
6.7.3.1 Provide Driver with Personal Travel Information
6.7.3.2 Provide Driver Information Interface

Physical

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Includes Physical Objects:

Physical Object Class Description
Basic Vehicle Vehicle 'Basic Vehicle' represents a complete operating vehicle. It includes the vehicle platform that interfaces with and hosts ITS electronics and all of the driver convenience and entertainment systems, and other non-ITS electronics on-board the vehicle. Interfaces represent both internal on-board interfaces between ITS equipment and other vehicle systems and other passive and active external interfaces or views of the vehicle that support vehicle/traffic monitoring and management. External interfaces may also represent equipment that is carried into the vehicle (e.g., a smartphone that is brought into the vehicle). Internal interfaces are often implemented through a vehicle databus, which is also included in this object. Note that 'Vehicle' represents the general functions and interfaces that are associated with personal automobiles as well as commercial vehicles, emergency vehicles, transit vehicles, and other specialized vehicles.
Connected Vehicle Roadside Equipment Field 'Connected Vehicle Roadside Equipment' (CV RSE) represents the Connected Vehicle roadside devices (i.e., Roadside Units (RSUs)) equipped with short range wireless (SRW) communications technology, as well as any other supporting equipment that leverage the RSU and are not described by other objects (e.g., a local roadside processor). CVRSE are used to send messages to, and receive messages from, nearby vehicles and personal devices equipped with compatible communications technology. Communications with adjacent field equipment and back office centers that monitor and control the RSE are also supported. This device operates from a fixed position and may be permanently deployed or a portable device that is located temporarily in the vicinity of a traffic incident, road construction, or a special event. It includes a processor, data storage, and communications capabilities that support secure communications with passing vehicles, other field equipment, and centers.
Driver Vehicle The 'Driver' represents the person that operates a vehicle on the roadway. Included are operators of private, transit, commercial, and emergency vehicles where the interactions are not particular to the type of vehicle (e.g., interactions supporting vehicle safety applications). The Driver originates driver requests and receives driver information that reflects the interactions which might be useful to all drivers, regardless of vehicle classification. Information and interactions which are unique to drivers of a specific vehicle type (e.g., fleet interactions with transit, commercial, or emergency vehicle drivers) are covered by separate objects.
ITS Roadway Equipment Field 'ITS Roadway Equipment' represents the ITS equipment that is distributed on and along the roadway that monitors and controls traffic and monitors and manages the roadway. This physical object includes traffic detectors, environmental sensors, traffic signals, highway advisory radios, dynamic message signs, CCTV cameras and video image processing systems, grade crossing warning systems, and ramp metering systems. Lane management systems and barrier systems that control access to transportation infrastructure such as roadways, bridges and tunnels are also included. This object also provides environmental monitoring including sensors that measure road conditions, surface weather, and vehicle emissions. Work zone systems including work zone surveillance, traffic control, driver warning, and work crew safety systems are also included.
Maint and Constr Management Center Center The 'Maint and Constr Management Center' monitors and manages roadway infrastructure construction and maintenance activities. Representing both public agencies and private contractors that provide these functions, this physical object manages fleets of maintenance, construction, or special service vehicles (e.g., snow and ice control equipment). The physical object receives a wide range of status information from these vehicles and performs vehicle dispatch, routing, and resource management for the vehicle fleets and associated equipment. The physical object participates in incident response by deploying maintenance and construction resources to an incident scene, in coordination with other center physical objects. The physical object manages equipment at the roadside, including environmental sensors and automated systems that monitor and mitigate adverse road and surface weather conditions. It manages the repair and maintenance of both non-ITS and ITS equipment including the traffic controllers, detectors, dynamic message signs, signals, and other equipment associated with the roadway infrastructure. Weather information is collected and fused with other data sources and used to support advanced decision support systems. The physical object remotely monitors and manages ITS capabilities in work zones, gathering, storing, and disseminating work zone information to other systems. It manages traffic in the vicinity of the work zone and advises drivers of work zone status (either directly at the roadside or through an interface with the Transportation Information Center or Traffic Management Center physical objects.) Construction and maintenance activities are tracked and coordinated with other systems, improving the quality and accuracy of information available regarding closures and other roadway construction and maintenance activities.
Traffic Management Center Center The 'Traffic Management Center' monitors and controls traffic and the road network. It represents centers that manage a broad range of transportation facilities including freeway systems, rural and suburban highway systems, and urban and suburban traffic control systems. It communicates with ITS Roadway Equipment and Connected Vehicle Roadside Equipment (RSE) to monitor and manage traffic flow and monitor the condition of the roadway, surrounding environmental conditions, and field equipment status. It manages traffic and transportation resources to support allied agencies in responding to, and recovering from, incidents ranging from minor traffic incidents through major disasters.
Transportation Information Center Center The 'Transportation Information Center' collects, processes, stores, and disseminates transportation information to system operators and the traveling public. The physical object can play several different roles in an integrated ITS. In one role, the TIC provides a data collection, fusing, and repackaging function, collecting information from transportation system operators and redistributing this information to other system operators in the region and other TICs. In this information redistribution role, the TIC provides a bridge between the various transportation systems that produce the information and the other TICs and their subscribers that use the information. The second role of a TIC is focused on delivery of traveler information to subscribers and the public at large. Information provided includes basic advisories, traffic and road conditions, transit schedule information, yellow pages information, ride matching information, and parking information. The TIC is commonly implemented as a website or a web-based application service, but it represents any traveler information distribution service.
Vehicle Vehicle This 'Vehicle' physical object is used to model core capabilities that are common to more than one type of Vehicle. It provides the vehicle-based general sensory, processing, storage, and communications functions that support efficient, safe, and convenient travel. Many of these capabilities (e.g., see the Vehicle Safety service packages) apply to all vehicle types including personal vehicles (including motorcycles), commercial vehicles, emergency vehicles, transit vehicles, and maintenance vehicles. From this perspective, the Vehicle includes the common interfaces and functions that apply to all motorized vehicles. The radio(s) supporting V2V and V2I communications are a key component of the Vehicle. Both one-way and two-way communications options support a spectrum of information services from basic broadcast to advanced personalized information services. Advanced sensors, processors, enhanced driver interfaces, and actuators complement the driver information services so that, in addition to making informed mode and route selections, the driver travels these routes in a safer and more consistent manner. This physical object supports all six levels of driving automation as defined in SAE J3016. Initial collision avoidance functions provide 'vigilant co-pilot' driver warning capabilities. More advanced functions assume limited control of the vehicle to maintain lane position and safe headways. In the most advanced implementations, this Physical Object supports full automation of all aspects of the driving task, aided by communications with other vehicles in the vicinity and in coordination with supporting infrastructure subsystems.
Vehicle Characteristics Vehicle 'Vehicle Characteristics' represents the external view of individual vehicles of any class from cars and light trucks up to large commercial vehicles and down to micromobility vehicles (MMVs). It includes vehicle physical characteristics such as height, width, length, weight, and other properties (e.g., magnetic properties, number of axles, occupants, emissions) of individual vehicles that can be sensed and measured or classified. This physical object represents the physical properties of vehicles that can be sensed by vehicle-based or infrastructure-based sensors to support vehicle automation and traffic sensor systems. The analog properties provided by this terminator represent the sensor inputs that are used to detect and assess vehicle(s) within the sensor's range to support safe AV operation and/or responsive and safe traffic management.

Includes Functional Objects:

Functional Object Description Physical Object
MCM Reduced Speed Zone Warning 'MCM Reduced Speed Zone Warning' supports remote control and monitoring of reduced speed zone warning roadside equipment. It provides posted speed limits and associated schedules and information about associated road configuration changes including lane merges and shifts. It monitors field equipment operation and reports current status to the operator. Maint and Constr Management Center
Roadway Signal Control 'Roadway Signal Control' includes the field elements that monitor and control signalized intersections. It includes the traffic signal controllers, detectors, conflict monitors, signal heads, and other ancillary equipment that supports traffic signal control. It also includes field masters, and equipment that supports communications with a central monitoring and/or control system, as applicable. The communications link supports upload and download of signal timings and other parameters and reporting of current intersection status. It represents the field equipment used in all levels of traffic signal control from basic actuated systems that operate on fixed timing plans through adaptive systems. It also supports all signalized intersection configurations, including those that accommodate pedestrians. In advanced, future implementations, environmental data may be monitored and used to support dilemma zone processing and other aspects of signal control that are sensitive to local environmental conditions. ITS Roadway Equipment
Roadway Speed Monitoring and Warning 'Roadway Speed Monitoring and Warning' includes the field elements that monitor vehicle speeds. If the speed is determined to be excessive, an advisory or warning is displayed. Current environmental conditions and other factors that may reduce safe operating speeds may also be taken into account. The operational status (state of the device, configuration, and fault data) is provided to the center. This application can also provide an enforcement function, reporting speed violations to an enforcement agency. ITS Roadway Equipment
RSE Intersection Management 'RSE Intersection Management' uses short range communications to support connected vehicle applications that manage signalized intersections. It communicates with approaching vehicles and ITS infrastructure (e.g., the traffic signal controller) to enhance traffic signal operations. Coordination with the ITS infrastructure also supports conflict monitoring to ensure the RSE output and traffic signal control output are consistent and degrade in a fail safe manner. This object also has the required functionalities for optimizing Signal Phase and Timing (SPaT), sending necessary commands to traffic signal controller to execute the optimized SPaT, and updating SPaT in real-time. Connected Vehicle Roadside Equipment
RSE Speed Warning 'RSE Speed Warning' notifies connected vehicles that are approaching a reduced speed zone, providing: (1) the zone’s current posted speed limit and (2) any roadway configuration changes associated with the reduced speed zone (e.g., lane closures, lane shifts) if applicable, and (3) associated warning information (i.e., the reason for the reduced speed warning). Configuration parameters that define the applicable speed limit(s), geographic location and extent of the reduced speed zone, and roadway configuration information are received from a center or provided through a local interface. The characteristics of individual vehicles may also be monitored and used to warn vehicles with specific limitations that reduce safe operating speeds, (e.g., rollover risk for tall vehicles). This functional object works in conjunction with the 'Roadway Speed Monitoring and Warning' functional object, which uses traditional ITS field equipment to warn non-equipped vehicles. Connected Vehicle Roadside Equipment
TIC Situation Data Management 'TIC Situation Data Management' manages connected vehicle situation data collection, quality controls, filtering, aggregation, and storage. Through this process, raw data reported by connected vehicles are transformed into information products that can be accessed and used to support transportation operations and traveler information. Transportation Information Center
TIC Traffic Control Dissemination 'TIC Traffic Control Dissemination' serves as intermediary between transportation operations centers (e.g., TMC, Transit MC) and transportation users (e.g., vehicles, personal devices). It collects and disseminates intersection status, lane control information, special vehicle alerts, and other traffic control related information that is real-time or near real-time in nature and relevant to vehicles in a relatively local area on the road network. It collects traffic control information from Traffic Management and other Center(s) and disseminates the relevant information to vehicles and other mobile devices. Transportation Information Center
TMC Speed Warning 'TMC Speed Warning' supports remote control and monitoring of reduced speed zone warning roadside equipment. It provides the location and extent of the reduced speed zone, the posted speed limit(s) with information about the applicability of the speed limit(s) (e.g., time of day, day of week, seasonality, relevant vehicle types) and information about associated road configuration changes including lane merges and shifts. It monitors field equipment operation and reports current status to the operator. Traffic Management Center
Vehicle Basic Safety Communication 'Vehicle Basic Safety Communication' exchanges current vehicle characteristics, location, and motion (including past and intended maneuver) information with other vehicles in the vicinity and the infrastructure, uses that information to calculate vehicle paths, and warns the driver when the potential for an impending collision is detected. If available, map data is used to filter and interpret the relative location and motion of vehicles in the vicinity. Information from on-board sensors (e.g., radars and image processing) are also used, if available, in combination with the V2V communications to detect non-equipped vehicles and corroborate connected vehicle data. This object represents a broad range of implementations ranging from basic Vehicle Awareness Devices that only broadcast vehicle location and motion and provide no driver warnings to advanced integrated safety systems that coordinate maneuvers and may, in addition to warning the driver, provide collision warning information to support automated control functions that can support control intervention. This object can also support broadcasting other vehicle information required for passing through a specific roadway segment such as variables that describe vehicle's characteristics and parameters, driver's preferences in terms of vehicle motion and behavior, etc. Vehicle
Vehicle Control Warning 'Vehicle Control Warning' monitors areas around the vehicle and provides warnings to a driver so the driver can take action to recover and maintain safe control of the vehicle. It includes lateral warning systems that warn of lane departures and obstacles or vehicles to the sides of the vehicle and longitudinal warning systems that monitor areas in the vehicle path and provide warnings when headways are insufficient or obstacles are detected in front of or behind the vehicle. It includes on-board sensors, including radars and imaging systems, and the driver information system that provides the visual, audible, and/or haptic warnings to the driver. Vehicle
Vehicle Intersection Movement 'Vehicle Intersection Movement' uses short-range wireless communications to monitor other connected vehicles at intersections and support the safe movement of the vehicle through the intersection by receiving and processing signal phase and timing messages from the intersection. Driver warnings are provided and the application may also optionally take control of the vehicle to avoid collisions, in coordination with Vehicle Control Automation. The application will also notify the infrastructure and other vehicles if it detects an unsafe infringement on the intersection. Vehicle
Vehicle Situation Data Monitoring 'Vehicle Situation Data Monitoring' is the highest-level representation of the functionality required to collect traffic and environmental situation data by monitoring and storing the experience of the vehicle as it travels through the road network. Collected data is aggregated into snapshots that are reported when communications is available and with flow control based on parameters provided by the infrastructure. Note that this functional object supports collection of data for areas remote from RSEs or other communications infrastructure. Vehicle
Vehicle Speed Management Assist 'Vehicle Speed Management Assist' assists the driver in operating the vehicle within the current speed limit. It monitors current vehicle speed and communicates with the infrastructure to receive current speed limits and associated road configuration change notifications. Driver warnings are issued when unsafe or excessive speeds are detected based on the provided speed limits and current conditions. Vehicle
Vehicle Traveler Information Reception 'Vehicle Traveler Information Reception' receives advisories, vehicle signage data, and other driver information of use to all types of vehicles and drivers and presents this information to the driver using in-vehicle equipment. Information presented may include fixed sign information, traffic control device status (e.g., signal phase and timing data), advisory and detour information, warnings of adverse road and weather conditions, travel times, and other driver information. Vehicle

Includes Information Flows:

Information Flow Description
driver information Regulatory, warning, guidance, and other information provided to the driver to support safe and efficient vehicle operation.
driver input Driver input to the vehicle on-board equipment including configuration data, settings and preferences, interactive requests, and control commands.
driver input information Driver input received from the driver-vehicle interface equipment via the vehicle bus. It includes configuration data, settings and preferences, interactive requests, and control commands for the connected vehicle on-board equipment.
driver update information Information provided to the driver-vehicle interface to inform the driver about current conditions, potential hazards, and the current status of vehicle on-board equipment. The flow includes the information to be presented to the driver and associated metadata that supports processing, prioritization, and presentation by the DVI as visual displays, audible information and warnings, and/or haptic feedback.
driver updates Information provided to the driver including visual displays, audible information and warnings, and haptic feedback. The updates inform the driver about current conditions, potential hazards, and the current status of vehicle on-board equipment.
field device coordination Coordination between operating centers that share control of the same field devices. This flow supports coordination to prevent conflicts and allow cooperative management of shared devices.
host vehicle status Information provided to the ITS on-board equipment from other systems on the vehicle platform. This includes the current status of the powertrain, steering, and braking systems, and status of other safety and convenience systems. In implementations where GPS is not integrated into the Vehicle On-Board Equipment, the host vehicle is also the source for data describing the vehicle's location in three dimensions (latitude, longitude, elevation) and accurate time that can be used for time synchronization across the ITS environment.
intersection geometry The physical geometry of an intersection covering the location and width of each approaching lane, egress lane, and valid paths between approaches and egresses. This flow also defines the location of stop lines, cross walks, specific traffic law restrictions for the intersection (e.g., turning movement restrictions), and other elements that support calculation of a safe and legal vehicle path through the intersection.
intersection status Current signal phase and timing information for all lanes at a signalized intersection. This flow identifies active lanes and lanes that are being stopped and specifies the length of time that the current state will persist for each lane. It also identifies signal priority and preemption status and pedestrian crossing status information where applicable. It may also include future signal phase and timing information.
lane closure information Lane closure information provided to passing vehicles. This flow provides information about roadway configuration changes such as lane closures and shifts.
reduced speed notification Reduced speed zone information provided to passing vehicles. This flow provides the reduced speed limit, the location and extent of the reduced speed zone, and associated warning information.
reduced speed warning info Real time notification of vehicle detections, measured vehicle characteristics (e.g., vehicle height), speed measurements, and warnings issued by roadway infrastructure. This flow can also include roadway configuration data, current speed limits, and warning parameters and thresholds enabling local speed management application configuration and management.
road network traffic situation data Aggregated route usage, travel times, and other aggregated measures based on data collected from probe vehicles. Raw and/or filtered vehicle control events may also be included to support incident detection. This flow represents aggregate data collected from many probe data collection points (e.g., CVRSEs or MECs) and/or from wide-area wireless communications with probe vehicles covering an area of interest or region.
roadway dynamic signage data Information used to initialize, configure, and control dynamic message signs. This flow can provide message content and delivery attributes, local message store maintenance requests, control mode commands, status queries, and all other commands and associated parameters that support remote management of these devices.
roadway dynamic signage status Current operating status of dynamic message signs.
signal control commands Control of traffic signal controllers or field masters including clock synchronization.
speed monitoring control Information used to configure and control automated speed monitoring, speed warning, and speed enforcement systems.
speed monitoring information System status including current operational state and logged information including measured speeds, warning messages displayed, and violation records.
speed warning application info Roadway configuration data, current speed limits including time of day, week, or season speed limits as necessary, and warning parameters and thresholds. This flow also supports remote control of the application so the application can be taken offline, reset, or restarted.
speed warning application status Speed warning application status reported by the RSE. This includes current operational state and status of the RSE and a record of measured vehicle speeds and notifications, alerts, and warnings issued.
vehicle characteristics The physical or visible characteristics of individual vehicles that can be used to detect, classify, and monitor vehicles and imaged to uniquely identify vehicles and characterize their performance (e.g., speed, occupants, emissions).
vehicle location and motion for surveillance Data describing the vehicle's location in three dimensions, heading, speed, acceleration, braking status, and size. This flow represents monitoring of basic safety data ('vehicle location and motion') broadcast by passing connected vehicles for use in vehicle detection and traffic monitoring applications.
vehicle situation data This flow represents vehicle snapshots that may be provided by the vehicle to support traffic and environmental conditions monitoring. Snapshots are collected by the vehicle for specific events (e.g., when a sensor exceeds a threshold) or periodically and reported based on control parameters when communications is available. Traffic-related data includes snapshots of measured speed and heading and events including starts and stops, speed changes, and other vehicle control events. Environmental data may include measured air temperature, exterior light status, wiper status, sun sensor status, rain sensor status, traction control status, anti-lock brake status, and other collected vehicle system status and sensor information. The collected data is reported along with the location, heading, and time that the data was collected.
vehicle situation data parameters A request for vehicle situation data that includes parameters used to control the data that is reported and the flow of data reported by the vehicle. This flow identifies the type of data/snapshots that are requested and reporting parameters such as snapshot frequency, filtering criteria (data thresholds for reporting), and reporting interval.

Goals and Objectives

Associated Planning Factors and Goals

Planning Factor Goal
A. Support the economic vitality of the metropolitan area, especially by enabling global competitiveness, productivity, and efficiency; Improve freight network
B. Increase the safety of the transportation system for motorized and nonmotorized users; Reduce fatalities and injuries
D. Increase the accessibility and mobility of people and for freight; Reduce congestion
E. Protect and enhance the environment, promote energy conservation, improve the quality of life, and promote consistency between transportation improvements and State and local planned growth and economic development patterns; Protect/Enhance the Environment
G. Promote efficient system management and operation; Improve efficiency
I. Improve the resiliency and reliability of the transportation system and reduce or mitigate stormwater impacts of surface transportation; Improve resiliency and reliability

Associated Objective Categories

Objective Category
Arterial Management: Reliability
Emergency/Incident Management: Person Hours of Delay
Freeway Management: Efficiency
Freeway Management: Reliability
Safety: Vehicle Crashes and Fatalities
System Efficiency: Cost of Congestion
System Efficiency: Delay
System Efficiency: Energy Consumption
System Efficiency: Intensity of Congestion (Travel Time Index)
System Efficiency: Travel Time
System Reliability: Non-Recurring Delay
System Reliability: Travel Time 90th/95th Percentile
System Reliability: Travel Time Buffer Index
System Reliability: Variability

Associated Objectives and Performance Measures

Objective Performance Measure
Annual rate of change in regional average commute travel time will not exceed regional rate of population growth through the year Y. Average commute trip travel time (minutes).
Decrease the average buffer index for (multiple routes or trips) by X percent over Y years. The buffer index represents the extra time (buffer) most travelers add to their average travel time when planning trips. This is the extra time between the average travel time and near-worst case travel time (95th percentile). The buffer index is stated as a percentage of the average travel time. Average buffer index or buffer time can be calculated using miles traveled as a weighting factor. Buffer time = 95th percentile travel time (min) – average travel time (min).
Decrease the buffer index for (specific travel routes) by X percent over the next Y years. The buffer index represents the extra time (buffer) most travelers add to their average travel time when planning trips. This is the extra time between the average travel time and near-worst case travel time (95th percentile). The buffer index is stated as a percentage of the average travel time. Average buffer index or buffer time can be calculated using miles traveled as a weighting factor. Buffer time = 95th percentile travel time (min) – average travel time (min).
Improve average travel time during peak periods by X percent by year Y. Average travel time during peak periods (minutes).
Reduce buffer index on the freeway system during peak and off-peak periods by X percent in Y years. The buffer index (represents the extra time (buffer) travelers add to their average travel time when planning trips in order to arrive on-time 95 percent of the time).
Reduce crashes at intersections Number of crashes and fatalities at signalized intersections
Reduce crashes at intersections Number of crashes and fatalities at unsignalized intersections
Reduce crashes at intersections Number of crashes and fatalities related to red-light running
Reduce crashes at railroad crossings Number of crashes and fatalities at railroad crossings
Reduce crashes due to driver errors and limitations Number of crashes and fatalities related to driver inattention and distraction
Reduce crashes due to driver errors and limitations Number of crashes and fatalities related to driving while intoxicated
Reduce crashes due to red-light running Number of crashes and fatalities related to red-light running
Reduce crashes due to road weather conditions Number of crashes and fatalities related to weather conditions
Reduce crashes due to unexpected congestion Number of crashes and fatalities related to unexpected congestion
Reduce crashes due to unsafe drivers, vehicles and cargo on the transportation system Number of crashes and fatalities due to commercial vehicle safety violations
Reduce delay associated with incidents on arterials by X percent by year Y. Hours of delay associated with incidents.
Reduce delay associated with incidents on the freeway system by X percent by year Y. Hours of delay associated with incidents.
Reduce excess fuel consumed due to congestion by X percent by year Y. Excess fuel consumed (total or per capita).
Reduce hours of delay per capita by X percent by year Y. Hours of delay (person-hours).
Reduce hours of delay per capita by X percent by year Y. Hours of delay per capita.
Reduce hours of delay per driver by X percent by year Y. Hours of delay (person-hours).
Reduce hours of delay per driver by X percent by year Y. Hours of delay per driver.
Reduce lane departure crashes Number of crashes and fatalities related to inappropriate lane departure, crossing or merging
Reduce secondary crashes Number of secondary crashes
Reduce speed differential Number of crashes and fatalities related to excessive speeding
Reduce speed differential Number of speed violations
Reduce the 90th (or 95th) percentile travel times for each route selected by X percent over Y years. 95th or 90th percentile travel times for selected routes.
Reduce the annual monetary cost of congestion per capita for the next X years. Cost (in dollars) of congestion or delay per capita.
Reduce the average buffer time needed to arrive on-time for 95 percent of trips on (specified routes) by X minutes over Y years. The buffer index represents the extra time (buffer) most travelers add to their average travel time when planning trips. This is the extra time between the average travel time and near-worst case travel time (95th percentile). The buffer index is stated as a percentage of the average travel time. Average buffer index or buffer time can be calculated using miles traveled as a weighting factor. Buffer time = 95th percentile travel time (min) – average travel time (min).
Reduce the average of the 90th (or 95th) percentile travel times for (a group of specific travel routes or trips in the region) by X minutes in Y years. 95th or 90th percentile travel times for selected routes.
Reduce the number of fatalities in crashes involving a driver or motorcycle operator with a BAC of.08 and above by X percent by Y year. Number of fatalities in crashes involving a driver or motorcycle operator with a BAC of.08 and above
Reduce the number of motorcyclist fatalities by X percent by year Y. Number of motorcyclist fatalities
Reduce the number of pedestrian fatalities by X percent by year Y. Number of pedestrian fatalities
Reduce the number of person hours (or vehicle hours) of delay experienced by travelers on the freeway system. Hours of delay (vehicle-hours or person-hours).
Reduce the number of person hours (or vehicle hours) of delay experienced by travelers on the freeway system. Hours of delay per capita or driver.
Reduce the number of speeding-related fatalities by X percent by year Y. Number of speeding-related fatalities
Reduce the person hours (or vehicle hours) of total delay associated with traffic incidents by X percent over Y years. Person hours (or vehicle hours) of delay associated with traffic incidents.
Reduce the rate fatalities in the region by X percent by year Y. Rate of fatalities (rate per vehicle miles travelled (VMT))
Reduce the rate of severe injuries in the region by X percent by year Y. Rate of serious injuries (rate per VMT)
Reduce the regional average travel time index by X percent per year. Travel time index (the average travel time during the peak period, using congested speeds, divided by the off-peak period travel time, using posted or free-flow speeds).
Reduce the share of freeway miles at Level of Service (LOS) X by Y by year Z. Miles at LOS X or V/C > 1.0 (or other threshold).
Reduce the total number of crashes in the region by X percent by year Y. Total crashes per X VMT.
Reduce the total number of fatalities and severe injuries in the region by X percent by year Y. Total fatalities per X VMT.
Reduce the total number of fatalities and severe injuries in the region by X percent by year Y. Total severe injuries per X VMT.
Reduce the total number of fatalities in the region by X percent by year Y. Number of fatalities
Reduce the total number of severe injuries in the region by X percent by year Y. Number of serious injuries
Reduce the variability of travel time on specified routes by X percent during peak and off-peak periods by year Y. Variance of travel time. Variance is the sum of the squared deviations from the mean. This can also be calculated as the standard deviation of travel time. Standard deviation is the square root of variance.
Reduce total energy consumption per capita for transportation by X percent by year Y. Total energy consumed per capita for transportation.
Reduce total fuel consumption per capita for transportation by X percent by year Y. Total fuel consumed per capita for transportation.
Reduce total person hours of delay (or travel-time delay per capita) by time period (peak, off-peak) caused by all transient events such as traffic incidents, special events, and work zones. Total person hours of delay during scheduled and/or unscheduled disruptions to travel.
Reduce total person hours of delay (or travel-time delay per capita) by time period (peak, off-peak) caused by scheduled events, work zones, or system maintenance by x hours in y years. Travel time delay during scheduled and/or unscheduled disruptions to travel.
Reduce total person hours of delay (or travel-time delay per capita) by time period (peak, off-peak) caused by unscheduled disruptions to travel. Total person hours of delay during scheduled and/or unscheduled disruptions to travel.

 
Since the mapping between objectives and service packages is not always straight-forward and often situation-dependent, these mappings should only be used as a starting point. Users should do their own analysis to identify the best service packages for their region.

Needs and Requirements

Need Functional Object Requirement
01 Traffic Operations or Maintenance Operations need to be able to provide to Connected Vehicles information about speed reductions, lane closures or roadway configuration changes. Roadway Signal Control 01 The field element shall control traffic signals under center control.
RSE Intersection Management 01 The field element shall communicate with passing vehicles to provide the current signal phase and timing information for all lanes and approaches at a signalized intersection.
03 The field element shall send the infrastructure application status to the operations center.
09 The field element shall collect current signal phase and timing data from the traffic signal controller.
RSE Speed Warning 03 The field element shall provide vehicles with about speed reductions, lane closures or roadway configuration changes.
Vehicle Intersection Movement 03 The vehicle shall receive intersection signal timing information in order for the vehicle to determine if it will safely cross the intersection given its current location and speed.
Vehicle Traveler Information Reception 26 The vehicle shall receive information about reduced road speed or lane closures from a center or from connected vehicle roadside equipment.
02 Traffic Operations or Maintenance Operations need to be able to warn connected vehicles that they are driving above the posted reduced speed zone speed limit and/or the vehicle is impacted by changed roadway configurations in order for the connected vehicle to take appropriate action. MCM Reduced Speed Zone Warning 02 The center shall provide reduced speed zone posted speed limits and associated schedules and information about associated road configuration changes including lane merges and shifts for display on roadside devices.
03 The center shall provide to roadside equipment, for transmittal to connected vehicles, reduced speed zone posted speed limits and associated schedules and information about associated road configuration changes including lane merges and shifts.
RSE Speed Warning 01 The field element shall provide the reduced speed zone current posted speed limit as established by the controlling center and any roadway configuration changes associated with the reduced speed zone (e.g., lane closures, lane shifts).
TIC Situation Data Management 01 The center shall collect traffic probe data (speeds, travel times, etc.) from appropriately equipped vehicles and short range communications equipment.
07 The center shall provide probe data collection parameters to vehicles.
TIC Traffic Control Dissemination 04 The center shall provide target speed limit, speed advisories, and/or speed limit information to vehicle.
TMC Speed Warning 04 The center shall control reduced speed zone warning roadside equipment, providing the location and extent of the reduced speed zone, the posted speed limit(s) with information about the applicability of the speed limit(s) (e.g., time of day, day of week, seasonality, relevant vehicle types) and information about associated road configuration changes including lane merges and shifts.
Vehicle Basic Safety Communication 06 The vehicle shall exchange location and motion information with roadside equipment and nearby vehicles.
07 The vehicle shall receive warnings, informational road signs, traffic meters, and signals provided by infrastructure devices.
Vehicle Intersection Movement 03 The vehicle shall receive intersection signal timing information in order for the vehicle to determine if it will safely cross the intersection given its current location and speed.
Vehicle Situation Data Monitoring 02 The Vehicle shall collect data collection parameters from Centers.
03 The vehicle shall collect location and motion data from the vehicle platform.
05 The Vehicle shall provide data to Centers in accordance with data collection parameters provided by Centers/Connected Vehicle Roadside Equipment.
03 Drivers need to be able to receive warnings that the vehicle is approaching a reduced speed limit zone or that there are lane closures or roadway configuration changes in the upcoming roadway. Roadway Speed Monitoring and Warning 03 If the speed detected by vehicle speed sensors is determined to be excessive, the field element shall provide a safe speed advisory to passing drivers via a driver information system (such as portable messages signs, field to vehicle communications to in-vehicle signing systems, etc.).
TIC Traffic Control Dissemination 01 The center shall provide intersection status, lane control information, and other real time traffic control related information to vehicles.
Vehicle Control Warning 04 The vehicle shall present vehicle control warnings information to the driver in audible or visual forms without impairing the driver's ability to control the vehicle in a safe manner.
10 The Vehicle shall provide its location with lane-level accuracy to on-board warning applications.
Vehicle Speed Management Assist 03 The vehicle shall receive lane closure warnings from the roadside field equipment.
Vehicle Traveler Information Reception 26 The vehicle shall receive information about reduced road speed or lane closures from a center or from connected vehicle roadside equipment.

Related Sources

Document Name Version Publication Date
ITS User Services Document 1/1/2005
V2I Performance Requirements Draft 3/12/2014
Vehicle-to-Infrastructure (V2I) Safety Applications Concept of Operation Document Draft 8/10/2012
Vehicle-to-Infrastructure (V2I) Safety Applications System Requirements Document Final 3/8/2013


Security

In order to participate in this service package, each physical object should meet or exceed the following security levels.

Physical Object Security
Physical Object Confidentiality Integrity Availability Security Class
Basic Vehicle  
Connected Vehicle Roadside Equipment Moderate High Moderate Class 3
ITS Roadway Equipment Moderate Moderate Moderate Class 2
Maint and Constr Management Center Moderate High Moderate Class 3
Traffic Management Center Moderate High Moderate Class 3
Transportation Information Center Moderate Moderate Moderate Class 2
Vehicle Moderate Moderate Moderate Class 2
Vehicle Characteristics  



In order to participate in this service package, each information flow triple should meet or exceed the following security levels.

Information Flow Security
Source Destination Information Flow Confidentiality Integrity Availability
Basis Basis Basis
Basic Vehicle Vehicle driver input information Moderate High High
Internal vehicle flow that if reverse engineered could enable third party vehicle control. Largely a competitive question, could be set LOW if manufacturer and operator are not concerned with this type of compromise. Includes vehicle control commands, which must be timely and accurate to support safe vehicle operation. Includes vehicle control commands, which must be timely and accurate to support safe vehicle operation.
Basic Vehicle Vehicle host vehicle status Low Moderate High
Unlikely that this includes any information that could be used against the originator. This can be MODERATE or HIGH, depending on the application: This is used later on to determine whether a vehicle is likely going to violate a red light or infringe a work zone. This needs to be correct in order for the application to work correctly. Since this monitors the health and safety of the vehicle and that information is eventually reported to the driver, it should be available at all times as it directly affects vehicle and operator safety.
Connected Vehicle Roadside Equipment Maint and Constr Management Center speed warning application status Moderate Moderate Low
This information could be of interest to a malicious individual who is attempting to determine the best way to accomplish a crime. As such it would be best to not make it easily accessible. DISC: THEA and WYO believe his information is directly observable and thus LOW. If this is compromised, it could send unnecessary maintenance workers, or cause the appearance of excessive traffic violations, leading to further unnecessary investigation. A delay in reporting this may cause a delay in necessary maintenance, but (a) this is not time-critical and (b) there are other channels for reporting malfunctioning. Additionally, there is a message received notification, which means that RSE can ensure that all intersection safety issues are delivered. DISC: WYO believes this to be MODERATE.
Connected Vehicle Roadside Equipment Traffic Management Center speed warning application status Moderate Moderate Low
This information could be of interest to a malicious individual who is attempting to determine the best way to accomplish a crime. As such it would be best to not make it easily accessible. DISC: THEA and WYO believe his information is directly observable and thus LOW. If this is compromised, it could send unnecessary maintenance workers, or cause the appearance of excessive traffic violations, leading to further unnecessary investigation. A delay in reporting this may cause a delay in necessary maintenance, but (a) this is not time-critical and (b) there are other channels for reporting malfunctioning. Additionally, there is a message received notification, which means that RSE can ensure that all intersection safety issues are delivered. DISC: WYO believes this to be MODERATE.
Connected Vehicle Roadside Equipment Vehicle intersection geometry Low High Moderate
Map data intended for general use by any C-ITS component than needs it. No information here includes PII or anything else that, if viewed by someone other than the participant, would lead to harm. Map data is used for a host of application purposes. This widespread use means that any corruption in the data has a widespread and far reaching effect. Occasional outages of this flow will delay updates and lead to a loss of accurate function of some applications. Depending on the application this could be HIGH.
Connected Vehicle Roadside Equipment Vehicle intersection status Not Applicable High Moderate
This data is intended for all vehicles in the immediate area of the sender. If this is compromised, the Vehicle OBE will receive messages that are inconsistent with what the traffic signals are displaying. This could lead to confusion and reduce the ability of the application to provide value. If this is down, the Vehicle OBE doesn’t get the information it needs to stay in synch with the actual signal state, reducing or eliminating the value add from having this application. We assume that the Vehicle OBE will detect a lack of availability and choose not to send out-of-date information, so a failure of availability cannot have worse consequences than a failure of integrity which we have previously assessed at MEDIUM.
Connected Vehicle Roadside Equipment Vehicle lane closure information Low Moderate Low
Lane closure information is intended for broadcast and public consumption. Data should be consistent with observed reality, so it should be protected appropriately, otherwisee users may lose confidence in and ignore this flow in the future. While useful, this information is available through a variety of means.
Connected Vehicle Roadside Equipment Vehicle reduced speed notification Low Moderate Moderate
Seeing the broadcasted message on current reduced speed limit should not cause harm as this is sent to all nearby vehicles to notify of reduced speed limits This message should not be tampered with; could increase physical risk to the driver and other drivers on the road if not warned with the correct information. need immediate availability for the driver to react but cannot guarantee wireless communication
Driver Vehicle driver input Moderate High High
Data included in this flow may include origin and destination information, which should be protected from other's viewing as it may compromise the driver's privacy. Commands from from the driver to the vehicle must be correct or the vehicle may behave in an unpredictable and possibly unsafe manner Commands must always be able to be given or the driver has no control.
ITS Roadway Equipment Connected Vehicle Roadside Equipment reduced speed warning info Moderate Moderate Moderate
This data is intentionally transmitted to everyone via a broadcast. It can also be determined via other visual indicators; however, all communications between field infrastructure should be protected from viewing to prevent attackers from analyzing traffic and developing attack methods. This information should be accurate, but an incorrect information should not have a direct impact causing the loss of life or limb. The system should be able to operate properly if it misses a few messages. If a message is not received, the ITS RE should know.
ITS Roadway Equipment Driver driver information Not Applicable High Moderate
This data is sent to all drivers and is also directly observable, by design. This is the primary signal trusted by the driver to decide whether to go through the intersection and what speed to go through the intersection at; if it’s wrong, accidents could happen. If the lights are out you have to get a policeman to direct traffic – expensive and inefficient and may cause a cascading effect due to lack of coordination with other intersections.
ITS Roadway Equipment Maint and Constr Management Center roadway dynamic signage status Moderate Moderate Moderate
Device status information should not be available, as those with criminal intent may use this information toward their own ends. Data is intended to feed dissemination channels, either C-ITS messages or DMS or other channels, so it should generally be correct as it is distributed widely and any forgery or corrupted data will have widespread impact. Failure of this flow affects traveler information dissemination, the importance of which varies with the data contained in the flow and the scenario. Could be LOW in many instances.
ITS Roadway Equipment Maint and Constr Management Center speed monitoring information Moderate Moderate Moderate
Device status information should be concealed, as an unauthorized observer could use this to reverse engineer device control systems. Device status information needs to be available and correct, or the controlling system may take inappropriate maintenance action, costing time and money. Device status information needs to be available and correct, or the controlling system may take inappropriate maintenance action, costing time and money.
ITS Roadway Equipment Traffic Management Center roadway dynamic signage status Moderate Moderate Moderate
Device status information should not be available, as those with criminal intent may use this information toward their own ends. Data is intended to feed dissemination channels, either C-ITS messages or DMS or other channels, so it should generally be correct as it is distributed widely and any forgery or corrupted data will have widespread impact. Failure of this flow affects traveler information dissemination, the importance of which varies with the data contained in the flow and the scenario. Could be LOW in many instances.
ITS Roadway Equipment Traffic Management Center speed monitoring information Moderate Moderate Moderate
Device status information should be concealed, as an unauthorized observer could use this to reverse engineer device control systems. info that should not be tampered with, especially violation records and operational state but the rest is aggregate info want updates but outdated information will not be catastrophic; would want to know about the speeds, warnings, etc. to be able to reconfigure speed warning info as necessary
Maint and Constr Management Center Connected Vehicle Roadside Equipment speed warning application info Moderate High Moderate
Control flows, even for seemingly innocent devices, should be kept confidential to minimize attack vectors. While an individual installation may not be particularly impacted by a cyberattack of its sensor network, another installation might be severely impacted, and different installations are likely to use similar methods, so compromising one leads to compromising all. Control flows, even for seemingly innocent devices, should have MODERATE integrity at minimum, just to guarantee that intended control messages are received. Incorrect, corrupted, intercepted and modified control messages can or will result in target field devices not behaving according to operator intent. The severity of this depends on the type of device, which is why some devices are set MODERATE and some HIGH. Control flow availability is related to the criticality of being able to remotely control the device. For most devices, this is MODERATE. For purely passive devices with no incident relationship, this will be LOW. All devices should have default modes that enable them to operate without backhaul connectivity, so no device warrants a HIGH.
Maint and Constr Management Center ITS Roadway Equipment roadway dynamic signage data Moderate Moderate Moderate
Device control information should not be available, as those with criminal intent may use this information toward their own ends. Data is intended to feed dissemination channels, either C-ITS messages or DMS or other channels, so it should generally be correct as it is distributed widely and any forgery or corrupted data will have widespread impact. Occasional outages of this flow will delay dissemination of the data to travelers (the eventual end user) which could have significant impacts on travel, both safety and mobility impacts.
Maint and Constr Management Center ITS Roadway Equipment speed monitoring control Moderate High Low
Control flows, even for seemingly innocent devices, should be kept confidential to minimize attack vectors. While an individual installation may not be particularly impacted by a cyberattack of its sensor network, another installation might be severely impacted, and different installations are likely to use similar methods, so compromising one leads to compromising all. Control flows, even for seemingly innocent devices, should have MODERATE integrity at minimum, just to guarantee that intended control messages are received. Incorrect, corrupted, intercepted and modified control messages can or will result in target field devices not behaving according to operator intent. The severity of this depends on the type of device, which is why some devices are set MODERATE and some HIGH. Control flow availability is related to the criticality of being able to remotely control the device. For most devices, this is MODERATE. For purely passive devices with no incident relationship, this will be LOW. All devices should have default modes that enable them to operate without backhaul connectivity, so no device warrants a HIGH.
Maint and Constr Management Center Traffic Management Center field device coordination Low Moderate Moderate
There should be little harm to come from knowing who controls what field device in most instances. For security monitoring objects such as security cameras this might be MODERATE, but the flow is marked as low since it is unlikely that those kinds of objects have shared control. If this flow is incorrect or manipulated then an unauthorized party may be able to gain control of a device, which can have significant effects. This is not a control flow however, so actual control is unlikely, thus MODERATE. Depends on the sharing arrangement, but generally interfaces between centers should provide timely response to enable proper decision making and action.
Traffic Management Center Connected Vehicle Roadside Equipment speed warning application info Moderate High Moderate
Control flows, even for seemingly innocent devices, should be kept confidential to minimize attack vectors. While an individual installation may not be particularly impacted by a cyberattack of its sensor network, another installation might be severely impacted, and different installations are likely to use similar methods, so compromising one leads to compromising all. info needs to be correct to issue correct speed limit and warnings or could cause driver confusion and delays or unsafe speed if compromised want updates but outdated information will not be catastrophic; should be able to operate on previous or default information
Traffic Management Center ITS Roadway Equipment roadway dynamic signage data Moderate Moderate Moderate
Device control information should not be available, as those with criminal intent may use this information toward their own ends. Data is intended to feed dissemination channels, either C-ITS messages or DMS or other channels, so it should generally be correct as it is distributed widely and any forgery or corrupted data will have widespread impact. Occasional outages of this flow will delay dissemination of the data to travelers (the eventual end user) which could have significant impacts on travel, both safety and mobility impacts.
Traffic Management Center ITS Roadway Equipment signal control commands Moderate High Moderate
Control flows, even for seemingly innocent devices, should be kept confidential to minimize attack vectors. While an individual installation may not be particularly impacted by a cyberattack of its sensor network, another installation might be severely impacted, and different installations are likely to use similar methods, so compromising one leads to compromising all. DISC: NYC believes this to be LOW: "The result of this will be directly observable." Invalid messages could lead to an unauthorized user gaining control of an intersection. This could also be used to bring traffic to a standstill, which could lead to a large financial impact on the community. DISC: NYC believes this to be MODERATE: The signal timing is critical to the intersection operation; incorrect signal timing can lead to significant congestion and unreliable operation; while unsafe operation is controlled by the cabinet monitoring system, attackers could “freeze” the signal or call a preemption. RES: This will vary depending on the application and implementation. These messages are important to help with preemption and signal priority applications. Without them, these applications mayl not work. However, if these signals are not received, the ITS RE will continue to function using its default configuration. The TMC should have an acknowledgement of the receipt of a message. DISC: NYC blieves this to be LOW: TMC doesn’t play an active role in this application, i.e. even if it is unavailable, it is unlikely to affect the outcome of this application one way or the other. RES: This will vary depending on the application and implementation.
Traffic Management Center ITS Roadway Equipment speed monitoring control Moderate High Moderate
Control flows, even for seemingly innocent devices, should be kept confidential to minimize attack vectors. While an individual installation may not be particularly impacted by a cyberattack of its sensor network, another installation might be severely impacted, and different installations are likely to use similar methods, so compromising one leads to compromising all. From THEA: encrypted, authenticated, proprietary but shouldn’t cause substantial risk but does control speed enforcement systems Control flows, even for seemingly innocent devices, should have MODERATE integrity at minimum, just to guarantee that intended control messages are received. Incorrect, corrupted, intercepted and modified control messages can or will result in target field devices not behaving according to operator intent. The severity of this depends on the type of device, which is why some devices are set MODERATE and some HIGH. From THEA: proprietary info that should not be tampered with; could directly affect safety if compromised posting unsafe speed limits, etc. Control flow availability is related to the criticality of being able to remotely control the device. For most devices, this is MODERATE. For purely passive devices with no incident relationship, this will be LOW. All devices should have default modes that enable them to operate without backhaul connectivity, so no device warrants a HIGH. From THEA: want updates but outdated information will not be catastrophic; should be able to use previous/default config
Traffic Management Center Maint and Constr Management Center field device coordination Low Moderate Moderate
There should be little harm to come from knowing who controls what field device in most instances. For security monitoring objects such as security cameras this might be MODERATE, but the flow is marked as low since it is unlikely that those kinds of objects have shared control. If this flow is incorrect or manipulated then an unauthorized party may be able to gain control of a device, which can have significant effects. This is not a control flow however, so actual control is unlikely, thus MODERATE. Depends on the sharing arrangement, but generally interfaces between centers should provide timely response to enable proper decision making and action.
Traffic Management Center Transportation Information Center lane closure information Low Moderate Low
Lane closure information is intended for broadcast and public consumption. Data should be consistent with observed reality, so it should be protected appropriately, otherwisee users may lose confidence in and ignore this flow in the future. While useful, this information is available through a variety of means.
Traffic Management Center Transportation Information Center reduced speed warning info Not Applicable Moderate Moderate
This data is intentionally transmitted to everyone via a broadcast. It can also be determined via other visual indicators. This information should be accurate, but an incorrect information should not have a direct impact causing the loss of life or limb. The system should be able to operate properly if it misses a few messages. If a message is not received, the ITS RE should know.
Transportation Information Center Traffic Management Center road network traffic situation data Moderate Moderate Moderate
The data this is based on is not encrypted, but aggregated messages may have more privacy implications than individual ones. Should be limited effect if this data is incorrect or compromised, as there should be other mechanisms in place to validate it. This information is used as supplemental information. It should operate correctly if not every single message is received.
Transportation Information Center Vehicle lane closure information Low Moderate Low
Lane closure information is intended for broadcast and public consumption. Data should be consistent with observed reality, so it should be protected appropriately, otherwisee users may lose confidence in and ignore this flow in the future. While useful, this information is available through a variety of means.
Transportation Information Center Vehicle reduced speed warning info Not Applicable Moderate Moderate
This data is intentionally transmitted to everyone via a broadcast. It can also be determined via other visual indicators. This information should be accurate, but an incorrect information should not have a direct impact causing the loss of life or limb. The system should be able to operate properly if it misses a few messages. If a message is not received, the ITS RE should know.
Transportation Information Center Vehicle vehicle situation data parameters Low Moderate Moderate
This isn't exactly a control flow, more like a 'suggestion flow', as the vehicle will always decide what to send. Probably no need for obfuscation. Info should be accurate and should not be tampered so that the vehicle only discloses the correctly requested data Parameters should be timely and readily available, but would not have severe/catastrophic consequences if not
Vehicle Basic Vehicle driver update information Low Moderate Moderate
This information is all presented to the vehicle operator. Encrypting this information may make it harder to reverse engineer vehicle systems, and may defeat criminal tracking tools when the vehicle has already been compromised. Unless those scenarios are of concern to the operator or manufacturer, this can safely be set LOW. Any information presented to the operator of a vehicle should be both accurate and timely. By definition this includes safety information, but given that the driver has other means of learning about most threats, it seems difficult to justify HIGH. If HIGH is warranted, it should apply to both availability and integrity. Any information presented to the operator of a vehicle should be both accurate and timely. By definition this includes safety information, but given that the driver has other means of learning about most threats, it seems difficult to justify HIGH. If HIGH is warranted, it should apply to both availability and integrity.
Vehicle Connected Vehicle Roadside Equipment vehicle location and motion for surveillance Not Applicable Moderate Moderate
This is directly observable data; DISC: WYO believes this to be MODERATE Incorrect information here could lead to the system not functioning properly. If they are unable to properly detect all vehicles crossing the border, it would lead to confusion. There are other factors, such as visual indicators, of vehicles crossing the border, which can be used to help mitigate contradicting information. DISC: THEA believes this should be HIGH: "BSM info needs to be accurate and should not be tampered with" WYO believes this to be HIGH This information must be available in a timely manner for the system to act upon it. The system can operate correctly if some messages are missed, but overall a majority of them should be received.; WYO believes this to be LOW
Vehicle Driver driver updates Not Applicable Moderate Moderate
This data is informing the driver about the safety of a nearby area. It should not contain anything sensitive, and does not matter if another person can observe it. This is the information that is presented to the driver. If they receive incorrect information, they may act in an unsafe manner. However, there are other indicators that would alert them to any hazards, such as an oncoming vehicle or crossing safety lights. If this information is not made available to the driver, then the system has not operated correctly.
Vehicle Transportation Information Center vehicle situation data Moderate Moderate Low
Might be able to link multiple snapshots together and compromise some element of driver/traveler privacy. Event driven data can be used for various mobility monitoring applications, and as operational decisions may be made based on mobility conditions, this data's accuracy should be preserved or decisions may not align with real situations. While desireable, in most application contexts the provision of a single vehicle's data through this flow is not critical.
Vehicle Characteristics ITS Roadway Equipment vehicle characteristics

Standards

The diagram here shows the primary standards associated with the physical objects and information flows in this service package. Click on the standard # to go to the page explaining that standard in more detail. The tables that follow the diagram list the standards associated with the information flows in this service package that should drive development decisions. Click on the standard name for more information from the Communications View about a particular standard, including the solutions and information flow triples associated with the standard and any gaps or overlaps. This table is based primarily on standards used in North America. For information concerning standards and communications solutions in other regions consult the Communications View.

This material should be considered 'draft for review' and may change separately from ARC-IT version revisions. The date on the diagram relates to the date of the physical service package diagram on which this is based; standards-related information should be considered up-to-date as of the 'last updated' date on this page.

Communication Standards: Standards associated with data, message or dialog definitions, communications protocols and management and security of data exchanges. All standards here are also illustrated in information flow triple communications view diagrams.

NameTitle
ITS Application Entity
CTI 4501 CI Implementation Guide Connected Intersections Implementation Guide
ISO 19091 V2I for signalized intersections Intelligent transport systems -- Cooperative ITS -- Using V2I and I2V communications for applications related to signalized intersections
ISO 21219-15 TPEG2 - Traffic Event Intelligent transport systems -- Traffic and travel information (TTI) via transport protocol experts group, generation 2 (TPEG2) -- Part 15: Traffic event compact (TPEG2-TEC)
ITE TMDD Vol 2 Traffic Management Data Dictionary Standard for the Center-to-Center Communications: Volume 2: Design Content
NTCIP 1202 Signal Controller Objects NTCIP Object Definitions for ASC
NTCIP 1203 Message Sign Objects NTCIP Object Definitions for Dynamic Message Signs (DMS)
NTCIP 1205 CCTV Objects NTCIP Objects for CCTV Camera Control
NTCIP 1209 Transportation Sensor Objects NTCIP Object Definitions for Transportation Sensor Systems (TSS)
NTCIP 1210 Signal System Master Objects NTCIP Objects for Signal System Masters
SAE J2735 DSRC Message Set V2X Communications Message Set Dictionary
SAE J2945/4 Road Safety Applications Road Safety Applications
SAE J2945/B Signal Intersection Applications Minimum Requirements to Support Traffic Signal Priority and Preemption
SAE J3161/1 Requirements for LTE-V2X Safety Communications On-Board System Requirements for LTE-V2X V2V Safety Communications
Facilities Layer
Bundle: ISO 15784-2 Intelligent transport systems (ITS) -- Data exchange involving roadside modules communication -- Part 2: Centre to field device communications using SNMP
Not Needed No Standard Needed
NTCIP 2306 C2C Alternatives Application Profile for XML in ITS Center to Center Communications (AP-C2CXML)
SAE J2945 DSRC Common Design Elements Dedicated Short Range Communication (DSRC) Systems Engineering Process Guidance for J2945/x Documents and Common Design Concepts
Security Entity
Bundle: IEEE 1609.2 IEEE 1609.2 Security Bundle
IETF RFC 6353 TLS for SNMP Transport Layer Security (TLS) Transport Model for the Simple Network Management Protocol (SNMP)
IETF RFC 9456 TLS Updates for SNMP Updates to the TLS Transport Model for SNMP
ISO 21219-24 TPEG2 - Light Encryption Intelligent transport systems - Traffic and travel information (TTI) via transport protocol experts group, generation 2 (TPEG2) -- Part 24: Light encryption (TPEG2-LTE)
Secure Session Alternatives Secure Session Alternatives
Management Entity
3GPP: E-UTRA - Radio Resource Control 3rd Generation Partnership Project;Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification
3GPP: NAS protocol for EPS 3rd Generation Partnership Project;Technical Specification Group Radio Access Network; Non-Access-Stratum (NAS) protocol for Evolved Packet System (EPS); Stage 3
Bundle: SNMPv3 MIB SNMPv3 & Networking MIBs
ISO 21219-6 TPEG2 - Message Mgmt Intelligent transport systems - Traffic and travel information via transport protocol experts group, generation 2(TPEG2) -- Part 6: Message management container (TPEG2-MMC)
NTCIP 1201 Global Objects NTCIP Global Object (GO) Definitions
SAE J3161 LTE-V2X Deployment Profiles LTE Vehicle-to-Everything (LTE-V2X) Deployment Profiles and Radio Parameters for Single Radio Channel Multi-Service Coexistence
W3C WSDL Web Services Description Language (WSDL) 1.1
Networking and Transport Layer
IEEE 1609.3 WAVE - Networking Services IEEE Standard for Wireless Access in Vehicular Environments (WAVE) - Networking Services
IETF RFC 9293 TCP Transmission Control Protocol
Internet Transport Alternatives Internet Transport Alternatives
IP Alternatives Internet Protocol Alternative Set
Access Layer
3GPP LTE-V2X (PC5) 3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Release 14 Description; Summary of Rel-14 Work Items (Release 14)
Field SubNet Alternatives Field SubNet Alternatives
Internet Subnet Alternatives Internet Subnet Alternatives
Wireless Internet Alternatives (NA) Wireless Internet Alternatives according to North American standards

Physical Standards: Standards associated with device physical, environmental or performance requirements.

The following table lists the standards associated with physical objects in this service package. Click on the standard name for more information about a particular standard.

NameTitle
CTI 4001 RSU Roadside Unit (RSU) Standard
CTI 4501 CI Implementation Guide Connected Intersections Implementation Guide
ISO 15623 Fwd Collision Performance Intelligent transport systems -- Forward vehicle collision warning systems -- Performance requirements and test procedures
ISO 24100 Probe Vehicle Data Protection Intelligent transport systems -- Basic principles for personal data protection in probe vehicle information services
ITE 5201 ATC Advanced Transportation Controller
ITE 5202 ATC Model 2070 Model 2070 Controller Standard
ITE 5301 ATC ITS Cabinet Intelligent Transportation System Standard Specification for Roadside Cabinets
ITE 5401 ATC API Application Programming Interface Standard for the Advanced Transportation Controller
NEMA TS 8 Cyber and Physical Security Cyber and Physical Security for Intelligent Transportation Systems
NEMA TS2 Traffic Controller Assemblies Traffic Controller Assemblies with NTCIP Requirements
NEMA TS4 Hardware Standards for DMS Hardware Standards for Dynamic Message Signs (DMS) With NTCIP Requirements
SAE J3361 Antenna requirements V2X Antenna Coverage and Test Requirements for US FHWA Class 1 and Class 3-13 Class Vehicles
SAE J5001 OBU Standard Onboard Unit Standard for Connected Vehicles

Service-Level Standards: Standards associated service package structure, messaging patterns, user needs, requirements or similar systems-engineering content that describe one or more use cases satisfied by the service package.

The following table lists the standards that are associated with the service package as a whole. Click on the standard name for more information about a particular standard.

NameTitle
CTI 4501 CI Implementation Guide Connected Intersections Implementation Guide




System Requirements

System Requirement Need
001 The system shall provide reduced speed zone posted speed limits and associated schedules and information about associated road configuration changes including lane merges and shifts for display on roadside devices. 02 Traffic Operations or Maintenance Operations need to be able to warn connected vehicles that they are driving above the posted reduced speed zone speed limit and/or the vehicle is impacted by changed roadway configurations in order for the connected vehicle to take appropriate action.
002 The system shall provide to roadside equipment, for transmittal to connected vehicles, reduced speed zone posted speed limits and associated schedules and information about associated road configuration changes including lane merges and shifts. 02 Traffic Operations or Maintenance Operations need to be able to warn connected vehicles that they are driving above the posted reduced speed zone speed limit and/or the vehicle is impacted by changed roadway configurations in order for the connected vehicle to take appropriate action.
003 The system shall provide intersection status, lane control information, and other real time traffic control related information to vehicles. 03 Drivers need to be able to receive warnings that the vehicle is approaching a reduced speed limit zone or that there are lane closures or roadway configuration changes in the upcoming roadway.
004 The system shall collect traffic probe data (speeds, travel times, etc.) from appropriately equipped vehicles and short range communications equipment. 02 Traffic Operations or Maintenance Operations need to be able to warn connected vehicles that they are driving above the posted reduced speed zone speed limit and/or the vehicle is impacted by changed roadway configurations in order for the connected vehicle to take appropriate action.
005 The system shall provide target speed limit, speed advisories, and/or speed limit information to vehicle. 02 Traffic Operations or Maintenance Operations need to be able to warn connected vehicles that they are driving above the posted reduced speed zone speed limit and/or the vehicle is impacted by changed roadway configurations in order for the connected vehicle to take appropriate action.
006 The system shall control reduced speed zone warning roadside equipment, providing the location and extent of the reduced speed zone, the posted speed limit(s) with information about the applicability of the speed limit(s) (e.g., time of day, day of week, seasonality, relevant vehicle types) and information about associated road configuration changes including lane merges and shifts. 02 Traffic Operations or Maintenance Operations need to be able to warn connected vehicles that they are driving above the posted reduced speed zone speed limit and/or the vehicle is impacted by changed roadway configurations in order for the connected vehicle to take appropriate action.
007 The system shall provide a safe speed advisory to passing drivers via a driver information system (such as portable messages signs, field to vehicle communications to in-vehicle signing systems, etc.). 03 Drivers need to be able to receive warnings that the vehicle is approaching a reduced speed limit zone or that there are lane closures or roadway configuration changes in the upcoming roadway.
008 The system shall provide the reduced speed zone current posted speed limit as established by the controlling center and any roadway configuration changes associated with the reduced speed zone (e.g., lane closures, lane shifts). 02 Traffic Operations or Maintenance Operations need to be able to warn connected vehicles that they are driving above the posted reduced speed zone speed limit and/or the vehicle is impacted by changed roadway configurations in order for the connected vehicle to take appropriate action.
009 The system shall control traffic signals under center control. 01 Traffic Operations or Maintenance Operations need to be able to provide to Connected Vehicles information about speed reductions, lane closures or roadway configuration changes.
010 The system shall provide vehicles with about speed reductions, lane closures or roadway configuration changes. 01 Traffic Operations or Maintenance Operations need to be able to provide to Connected Vehicles information about speed reductions, lane closures or roadway configuration changes.
011 The system shall communicate with passing vehicles to provide the current signal phase and timing information for all lanes and approaches at a signalized intersection. 01 Traffic Operations or Maintenance Operations need to be able to provide to Connected Vehicles information about speed reductions, lane closures or roadway configuration changes.
012 The system shall receive lane closure warnings from the roadside field equipment. 03 Drivers need to be able to receive warnings that the vehicle is approaching a reduced speed limit zone or that there are lane closures or roadway configuration changes in the upcoming roadway.
013 The system shall exchange location and motion information with roadside equipment and nearby vehicles. 02 Traffic Operations or Maintenance Operations need to be able to warn connected vehicles that they are driving above the posted reduced speed zone speed limit and/or the vehicle is impacted by changed roadway configurations in order for the connected vehicle to take appropriate action.
014 The system shall send the infrastructure application status to the operations center. 01 Traffic Operations or Maintenance Operations need to be able to provide to Connected Vehicles information about speed reductions, lane closures or roadway configuration changes.
015 The system shall collect current signal phase and timing data from the traffic signal controller. 01 Traffic Operations or Maintenance Operations need to be able to provide to Connected Vehicles information about speed reductions, lane closures or roadway configuration changes.
016 The system shall receive information about reduced road speed or lane closures from a center or from connected vehicle roadside equipment. 01 Traffic Operations or Maintenance Operations need to be able to provide to Connected Vehicles information about speed reductions, lane closures or roadway configuration changes.
03 Drivers need to be able to receive warnings that the vehicle is approaching a reduced speed limit zone or that there are lane closures or roadway configuration changes in the upcoming roadway.
017 The system shall receive warnings, informational road signs, traffic meters, and signals provided by infrastructure devices. 02 Traffic Operations or Maintenance Operations need to be able to warn connected vehicles that they are driving above the posted reduced speed zone speed limit and/or the vehicle is impacted by changed roadway configurations in order for the connected vehicle to take appropriate action.
018 The system shall present vehicle control warnings information to the driver in audible or visual forms without impairing the driver's ability to control the vehicle in a safe manner. 03 Drivers need to be able to receive warnings that the vehicle is approaching a reduced speed limit zone or that there are lane closures or roadway configuration changes in the upcoming roadway.
019 The system shall provide its location with lane-level accuracy to on-board warning applications. 03 Drivers need to be able to receive warnings that the vehicle is approaching a reduced speed limit zone or that there are lane closures or roadway configuration changes in the upcoming roadway.
020 The system shall receive intersection signal timing information in order for the vehicle to determine if it will safely cross the intersection given its current location and speed. 01 Traffic Operations or Maintenance Operations need to be able to provide to Connected Vehicles information about speed reductions, lane closures or roadway configuration changes.
02 Traffic Operations or Maintenance Operations need to be able to warn connected vehicles that they are driving above the posted reduced speed zone speed limit and/or the vehicle is impacted by changed roadway configurations in order for the connected vehicle to take appropriate action.
021 The system shall collect data collection parameters from Centers. 02 Traffic Operations or Maintenance Operations need to be able to warn connected vehicles that they are driving above the posted reduced speed zone speed limit and/or the vehicle is impacted by changed roadway configurations in order for the connected vehicle to take appropriate action.
022 The system shall provide data to Centers in accordance with data collection parameters provided by Centers/Connected Vehicle Roadside Equipment. 02 Traffic Operations or Maintenance Operations need to be able to warn connected vehicles that they are driving above the posted reduced speed zone speed limit and/or the vehicle is impacted by changed roadway configurations in order for the connected vehicle to take appropriate action.
023 The system shall receive information about reduced road speed or lane closures from a center or from connected vehicle roadside equipment. 01 Traffic Operations or Maintenance Operations need to be able to provide to Connected Vehicles information about speed reductions, lane closures or roadway configuration changes.
03 Drivers need to be able to receive warnings that the vehicle is approaching a reduced speed limit zone or that there are lane closures or roadway configuration changes in the upcoming roadway.