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City of Charlottesville TMC Field Equipment

Status:

Existing

Definition:

These devices are typically located along the roadside and are controlled by operators in the TMC which aids them in monitoring and managing traffic conditions. The field equipment that aids operators in performing their functions are: Traffic Signal Systems and CCTV Cameras.

Stakeholder:

City of Charlottesville Public Works Department

Architecture Flow Diagrams
which include City of Charlottesville TMC Field Equipment:

• City of Charlottesville TMC Field Equipment City of Charlottesville TMC

Architecture Flows
to/from the City of Charlottesville TMC Field Equipment:

City of Charlottesville TMC Field Equipment City of Charlottesville TMC

• right-of-way request notification


• signal control status


• signal fault data


• traffic detector data


• traffic images

City of Charlottesville TMCCity of Charlottesville TMC Field Equipment

• signal control commands


• signal control device configuration


• signal control plans


• signal system configuration


• traffic detector control


• video surveillance control

National ITS Architecture Subsystems
mapped to the City of Charlottesville TMC Field Equipment:

• Connected Vehicle Roadside Equipment Subsystem
• ITS Roadway Equipment Subsystem

National ITS Architecture Services
associated with City of Charlottesville TMC Field Equipment:

• TM01 - Infrastructure-Based Traffic Surveillance - City of Charlottesville -- (Graphic)
• TM03 - Surface Street Control - City of Charlottesville -- (Graphic)

National ITS Architecture Functional Requirements
associated with City of Charlottesville TMC Field Equipment:

Roadway Data Collection

1. The field element shall collect traffic, road, and environmental conditions information.
2. The field element shall collect sensor status and sensor faults from roadside equipment and send it along with the recorded data to a center for archival.

Roadway Incident Detection

1. The field element shall collect, process, and send traffic images to the center for incident detection and further analysis.
2. The field element's video devices shall be remotely controlled by a traffic management center.
3. The field element shall provide operational status and fault data for the incident detection devices to the traffic management center.

Roadway Basic Surveillance

1. The field element shall collect, process, digitize, and send traffic sensor data (speed, volume, and occupancy) to the center for further analysis and storage, under center control.
2. The field element shall return sensor and CCTV system operational status to the controlling center.
3. The field element shall return sensor and CCTV system fault data to the controlling center for repair.
4. The field element shall collect, process, and send traffic images to the center for further analysis and distribution.

Roadway Signal Control

1. The field element shall return traffic signal controller fault data to the center.
2. The field element shall return traffic signal controller operational status to the center.
3. The field element shall report current preemption status to the center.
4. The field element shall report the current signal control information to the center.
5. The field element shall provide the capability to notify the traffic management center of pedestrian calls and pedestrian accommodations.
6. The field element shall control traffic signals under center control.
7. The field element shall respond to pedestrian crossing requests by accommodating the pedestrian crossing.

Roadway Field Device Support

1. The field element shall monitor the operational status of field devices and detects and reports fault conditions.
2. The field element shall detect and report any fault conditions with the equipment being monitored back to its controlling center.
3. The field element shall provide the capability for field personnel to locally control and configure this equipment.
4. The field element shall support an interface with field support equipment to accept installation of updates or configuration of field operations.