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Chesapeake Bay Bridge-Tunnel Field Equipment

Status:

Existing

Definition:

These devices are located on the Chesapeake Bay Bridge - Tunnel and are controlled by operators in the Chesapeake Bay Bridge - Tunnel toll plaza which aids them in monitoring and managing traffic conditions.

Stakeholder:

Chesapeake Bay Bridge and Tunnel Commission

Architecture Flow Diagrams
which include Chesapeake Bay Bridge-Tunnel Field Equipment:

• Chesapeake Bay Bridge-Tunnel Field Equipment Chesapeake Bay Bridge-Tunnel TOC

Architecture Flows
to/from the Chesapeake Bay Bridge-Tunnel Field Equipment:

Chesapeake Bay Bridge-Tunnel Field Equipment Chesapeake Bay Bridge-Tunnel TOC

• barrier system status


• environmental sensor data


• reversible lane status


• roadway dynamic signage status


• signal control status


• signal fault data


• traffic images

Chesapeake Bay Bridge-Tunnel TOCChesapeake Bay Bridge-Tunnel Field Equipment

• barrier system control


• environmental sensors control


• reversible lane control


• roadway dynamic signage data


• signal control commands


• signal control device configuration


• signal control plans


• signal system configuration


• video surveillance control

National ITS Architecture Subsystems
mapped to the Chesapeake Bay Bridge-Tunnel Field Equipment:

• Connected Vehicle Roadside Equipment Subsystem
• ITS Roadway Equipment Subsystem

National ITS Architecture Services
associated with Chesapeake Bay Bridge-Tunnel Field Equipment:

• TM01 - Infrastructure-Based Traffic Surveillance - Chesapeake Bay Bridge - Tunnel TOC -- (Graphic)
• TM03 - Surface Street Control - Chesapeake Bay Bridge - Tunnel TOC -- (Graphic)
• TM05 - Freeway Control - Chesapeake Bay Bridge -Tunnel TOC -- (Graphic)
• TM06 - Traffic Information Dissemination - Chesapeake Bay Bridge - Tunnel TOC -- (Graphic)
• TM19 - Roadway Closure Management - CBBT -- (Graphic)

National ITS Architecture Functional Requirements
associated with Chesapeake Bay Bridge-Tunnel Field Equipment:

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.
4. The field element shall remotely process video data and provide an indication of potential incidents to the traffic management center.

Roadway Traffic Information Dissemination

1. The field element shall provide fault data for the driver information systems equipment (DMS, HAR, etc.) to the center for repair.
2. The field element shall provide operational status for the driver information systems equipment (DMS, HAR, etc.) to the center.
3. The field element shall include dynamic message signs for dissemination of traffic and other information to drivers, under center control; the DMS may be either those that display variable text messages, or those that have fixed format display(s) (e.g. vehicle restrictions, or lane open/close).

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 control traffic signals under center control.