Traffic Management Center --> Transit Management Center:
traffic control priority status

Definitions

traffic control priority status (Information Flow): Status of signal priority request functions at the roadside (e.g., enabled or disabled).

Traffic Management Center (Source 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.

Transit Management Center (Destination Physical Object): The 'Transit Management Center' manages transit vehicle fleets and coordinates with other modes and transportation services. It provides operations, maintenance, customer information, planning and management functions for the transit property. It spans distinct central dispatch and garage management systems and supports the spectrum of fixed route, flexible route, paratransit services, transit rail, and bus rapid transit (BRT) service. The physical object's interfaces support communication between transit departments and with other operating entities such as emergency response services and traffic management systems.

Included In

This Triple is in the following Service Packages:

This triple is associated with the following Functional Objects:

This Triple is described by the following Functional View Data Flows:

This Triple has the following triple relationships:

Communication Solutions

Solutions are sorted in ascending Gap Severity order. The Gap Severity is the parenthetical number at the end of the solution.

Selected Solution

EU: SIRI - Secure Internet (ITS)

Solution Description

This solution is used within the E.U.. It combines standards associated with EU: SIRI with those for I-I: Secure Internet (ITS). The EU: SIRI standards include upper-layer standards required to implement C2C information flows for real-time public transport information. The I-I: Secure Internet (ITS) standards include lower-layer standards that support secure communications between ITS equipment using X.509 or IEEE 1609.2 security certificates.

ITS Application Entity
Mind the gap

CEN 15531-5
CEN 15213-4
CEN 15531-3
CEN 12896-4
CEN 12896-6
Click gap icons for more info.

Mgmt
Facilities

CEN 15531-2
Security
Mind the gapMind the gap
TransNet
Access

Internet Subnet Alternatives
TransNet TransNet

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ITS Application ITS Application

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Facility Facility

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Security Security

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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 Regional
Acknowledgement True
Cardinality Unicast
Initiator Destination
Authenticable True
Encrypt False


Interoperability Description
Regional Interoperability throughout the geopolitical region is highly desirable, but if implemented differently in different transportation management jurisdictions, significant benefits will still accrue in each jurisdiction. Regardless, this Information Flow Triple should be implemented consistently within a transportation jurisdiction (i.e., the scope of a regional architecture).

Security

Information Flow Security
  Confidentiality Integrity Availability
Rating Low Moderate Moderate
Basis This information is not sensitive. There are other indicators when an intersection supports transit signal priority. This information is important for the system to function correctly. If it is incorrect, it could lead to the transit system designing routes that do not take advantage of the optimizations. This information is necessary for the system to operate properly. There should be an acknowledgement of the message being received.


Security Characteristics Value
Authenticable True
Encrypt False