ITS Roadway Equipment --> Traffic Management Center:
signal control status
Definitions
signal control status (Information Flow): Operational and status data of traffic signal control equipment including operating condition and current indications.
ITS Roadway Equipment (Source 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.
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:
- CVO06: Freight Signal Priority
- MC11: Maintenance and Construction Signal Priority
- PS03: Emergency Vehicle Preemption
- PT09: Transit Signal Priority
- ST02: Eco-Traffic Signal Timing
- ST08: Eco-Approach and Departure at Signalized Intersections
- TM03: Traffic Signal Control
- TM04: Connected Vehicle Traffic Signal System
- TM16: Reversible Lane Management
- TM18: Drawbridge Management
- VS13: Intersection Safety Warning and Collision Avoidance
- VS15: Infrastructure Enhanced Cooperative Adaptive Cruise Control
This triple is associated with the following Functional Objects:
- Roadway Multimodal Crossing Control
- Roadway Reversible Lanes
- Roadway Signal Control
- Roadway Signal Preemption
- TMC Intersection Safety
- TMC Multimodal Crossing Management
- TMC Reversible Lane Management
- TMC Signal Control
This Triple is described by the following Functional View Data Flows:
This Triple has the following triple relationships:
None |
Communication Solutions
- EU: UTMC Data - UTMC (3)
- US: NTCIP Traffic Signal - SNMPv3/TLS (5)
- US: NTCIP Traffic Signal - SNMPv1/TLS (6)
- US: NTCIP Traffic Signal - SNMPv1 (32)
- AU: TRAFF - AU TRAFF Comms (36)
- EU: OCIT-O Signal Control - ODG-OCIT-O (44)
Selected Solution
Solution Description
ITS Application Entity
UTMC TS004.006 |
Click gap icons for more info.
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Mgmt
IETF RFC 1907 |
Facilities
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Security
IETF RFC 9147 |
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TransNet
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Access
Internet Subnet Alternatives |
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 |
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Time Context | Recent |
Spatial Context | Local |
Acknowledgement | False |
Cardinality | Unicast |
Initiator | Destination |
Authenticable | True |
Encrypt | False |
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 | Low | High | Moderate | |
Basis | The current conditions of an ITS RE are completely observable, by design. | This influences the TMC response to a right-of-way request. It should be as accurate as the right-of-way request themselves. For some applications (ISIG) this need only be moderate. Per THEA: info needs to be accurate and should not be tampered to enable effective monitoring and control by the TMC. DISC: THEA believes this to be MODERATE: "info needs to be accurate and should not be tampered to enable effective monitoring and control by the TMC; should be as accurate as the right of way request". NYC:TMC doesn't play an active role in this application, i.e. even if the information contained in this flow were incorrect, it is unlikely to affect the outcome of this application one way or the other. On some applications NYC has this MODERATE though. RES: This value can obviously change a lot depending on the application context. | The TMC will need the current status of the ITS RE in order to make an educated decision. If it is unavailable, the system is unable to operate. However, a few missed messages will not have a catastrophic impact. From NYC: 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 value can change a lot depending on the application context. |
Security Characteristics | Value |
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Authenticable | True |
Encrypt | False |