Connected Vehicle Roadside Equipment --> ITS Roadway Equipment:
signal service request
Definitions
signal service request (Information Flow): A call for service or extension for a signal control phase that is issued by the RSE for connected vehicles approaching an intersection and/or pedestrians at a crosswalk. This flow identifies the desired phase and service time.
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.
ITS Roadway Equipment (Destination Physical Object): '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.
Included In
This Triple is in the following Service Packages:
- ST02: Eco-Traffic Signal Timing
- TM04: Connected Vehicle Traffic Signal System
- VS12: Vulnerable Road User Safety
This triple is associated with the following Functional Objects:
- Roadway Mixed Use Crossing Safety
- Roadway Signal Control
- RSE Intersection Management
- RSE Intersection Safety
This Triple is described by the following Functional View Data Flows:
This Triple has the following triple relationships:
Relationship | Source | Destination | Flow |
---|---|---|---|
Interactive | ITS Roadway Equipment | Connected Vehicle Roadside Equipment | intersection control status |
Depends On | Vehicle | Connected Vehicle Roadside Equipment | vehicle location and motion for surveillance |
Communication Solutions
- US: NTCIP Signal Priority - SNMPv3/TLS (5)
- (None-Data) - Secure Internet (ITS) (32)
Selected Solution
Solution Description
ITS Application Entity
NTCIP 1202 NTCIP 1211 |
Click gap icons for more info.
|
||
Mgmt
|
Facilities
|
Security
IETF RFC 6353 |
|
TransNet
|
|||
Access
|
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 | Adjacent |
Acknowledgement | False |
Cardinality | Unicast |
Initiator | Source |
Authenticable | True |
Encrypt | False |
Interoperability | Description |
---|---|
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 | ||||
---|---|---|---|---|
Confidentiality | Integrity | Availability | ||
Rating | Not Applicable | Moderate | Low | |
Basis | info is not confidential or encrypted | requests should be accurate and not tampered with, otherwise incorrect or malicious requests could be granted which could lead to delays | requests should be timely and available immediately but availability cannot be guaranteed over a wireless medium; also worst case scenario is the vehicle or pedestrian has to wait for the appropriate signal |
Security Characteristics | Value |
---|---|
Authenticable | True |
Encrypt | False |