Connected Vehicle Roadside Equipment --> Traffic Management Center:
traffic situation data
Definitions
traffic situation data (Information Flow): Current, aggregate traffic data collected from connected vehicles that can be used to supplement or replace information collected by roadside traffic detectors. It includes raw and/or processed reported vehicle speeds, counts, and other derived measures. Raw and/or filtered vehicle control events may also be included to support incident detection.
Connected Vehicle Roadside Equipment (Source Physical Object): 'Connected Vehicle Roadside Equipment' (CV RSE) represents the Connected Vehicle roadside devices that are used to send messages to, and receive messages from, nearby vehicles using Dedicated Short Range Communications (DSRC) or other alternative wireless communications technologies. 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.
Traffic Management Center (Destination Physical Object): 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.
Included In
This Triple is in the following Service Packages:
- ST02: Eco-Traffic Signal Timing
- ST03: Eco-Traffic Metering
- ST04: Roadside Lighting
- ST10: Low Emissions Zone Management
- TM02: Vehicle-Based Traffic Surveillance
- TM04: Connected Vehicle Traffic Signal System
- TM21: Speed Harmonization
- VS08: Queue Warning
- VS15: Infrastructure Enhanced Cooperative Adaptive Cruise Control
- VS16: Automated Vehicle Operations
This triple is associated with the following Functional Objects:
- RSE Incident Scene Safety
- RSE Traffic Gap Assist
- RSE Traffic Monitoring
- RSE Work Zone Safety
- TMC Basic Surveillance
- TMC Situation Data Management
This Triple is described by the following Functional View Data Flows:
This Triple has the following triple relationships:
Relationship | Source | Destination | Flow |
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Depends On | Vehicle | Connected Vehicle Roadside Equipment | vehicle location and motion |
Depends On | Vehicle | Connected Vehicle Roadside Equipment | vehicle location and motion for surveillance |
Depends On | Vehicle | Connected Vehicle Roadside Equipment | vehicle situation data |
Communication Solutions
- US: NTCIP Transportation Sensors - SNMPv3/TLS (14)
- (None-Data) - Secure Internet (ITS) (32)
- Data for Distribution (TBD) - Apache Kafka (36)
- Data for Distribution (TBD) - OMG DDS (36)
- (None-Data) - OASIS MQTT (42)
- Data for Distribution (TBD) - OASIS MQTT (42)
- (None-Data) - OASIS AMQP (45)
- Data for Distribution (TBD) - OASIS AMQP (45)
Selected Solution
Solution Description
ITS Application Entity
NTCIP 1209 |
Click gap icons for more info.
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Mgmt
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Facilities
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Security
IETF RFC 6353 |
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TransNet
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Access
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Note that some layers might have alternatives, in which case all of the gap icons associated with every alternative may be shown on the diagram, but the solution severity calculations (and resulting ordering of solutions) includes only the issues associated with the default (i.e., best, least severe) alternative.
Characteristics
Characteristic | Value |
---|---|
Time Context | Recent |
Spatial Context | Local |
Acknowledgement | True |
Cardinality | Unicast |
Initiator | Source |
Authenticable | True |
Encrypt | True |
Interoperability | Description |
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Local | In cases where an interface is normally encapsulated by a single stakeholder, interoperability is still desirable, but the motive is vendor independence and the efficiencies and choices that an open standards-based interface provides. |
Security
Information Flow Security | ||||
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Confidentiality | Integrity | Availability | ||
Rating | Moderate | Moderate | Low | |
Basis | Aggregated messages may have more privacy implications than individual ones, especially if an attacker can attack more than one RSE-to-TMC connection at once. | only limited adverse effect if raw/processed connected vehicle data is bad/compromised; DISC: NYC believes this to be MODERATE: As investigation might be triggered if RF quality is reported as low, this data should be trusted. RES: Agree wih NYC. | only limited adverse effect of info is not timely/readily available. NYC: This data is purely for statistical purposes so low availability does not harm the [RSE RF Monitoring] application. |
Security Characteristics | Value |
---|---|
Authenticable | True |
Encrypt | True |