ITS Roadway Equipment --> Traffic Management Center:
environmental sensor data

Definitions

environmental sensor data (Information Flow): Current road conditions (e.g., surface temperature, subsurface temperature, moisture, icing, treatment status) and surface weather conditions (e.g., air temperature, wind speed, precipitation, visibility) as measured and reported by fixed and/or mobile environmental sensors. Operational status of the sensors is also included.

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.

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

AU: DMS and RWIS data - DMS and RWIS Comms

Solution Description

This solution is used within Australia. It combines standards associated with AU: DMS and RWIS data with those for I-F: DMS and RWIS Comms. The AU: DMS and RWIS data standards include lower-layer standards that define messages, monitoring and control of DMS and RWIS using SA TS 5719. The I-F: DMS and RWIS Comms standards include lower-layer standards that support communications for DMS and RWIS using SA TS 7519 via IP.

ITS Application Entity

SA TS 5719
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Mgmt

SA TS 5719
Facilities

SA TS 5719
Security

SA TS 5719
TransNet

SA TS 5719
Access
TransNet TransNet

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Mgmt Mgmt

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Facility Facility

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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 False
Cardinality Unicast
Initiator Destination
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 Low Moderate Moderate
Basis Little to no impact if this data is observed info should be correct to determine safe speeds etc.; DISC: WYO believes this to be HIGH Updates are desireable but slightly outdated information will not be catastrophic.


Security Characteristics Value
Authenticable True
Encrypt False