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City of Chesapeake 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 Chesapeake Public Works Department

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

• City of Chesapeake TMC Field Equipment City of Chesapeake TMC

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

City of Chesapeake TMC Field Equipment City of Chesapeake TMC

• environmental sensor data


• right-of-way request notification


• signal control status


• signal fault data


• traffic detector data


• traffic images

City of Chesapeake TMCCity of Chesapeake TMC Field Equipment

• environmental sensors control


• 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 Chesapeake TMC Field Equipment:

• Connected Vehicle Roadside Equipment Subsystem
• ITS Roadway Equipment Subsystem

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

• MC05 - Roadway Maintenance and Construction - Cities -- (Graphic)
• TM01 - Infrastructure-Based Traffic Surveillance - City of Chesapeake TMC -- (Graphic)
• TM03 - Surface Street Control - City of Chesapeake TMC -- (Graphic)
• TM06 - Traffic Information Dissemination - City of Chesapeake TMC -- (Graphic)
• TM18 - Drawbridge Management - City of Chesapeake -- (Graphic)
• TM19 - Roadway Closure Management - Cities -- (Graphic)

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

Roadway Data Collection

1. The field element shall collect traffic, road, and environmental conditions information.
2. The field element shall include the sensors and supporting roadside devices that sense, collect, and send traffic, road, and environmental conditions information to a center for archival.
3. 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 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.