Local Field Equipment

Status: Existing

Description: This element represents the field equipment that are used by non–VDOT traffic signal operations centers in the NOVA District.

Stakeholder: Local Traffic Agencies

Architecture Flow Diagrams
which include Local Field Equipment:

• Local Field Equipment Local TOCs
• Local Field Equipment Local Transit Vehicles
• Local Field Equipment WMATA Transit Vehicles

Architecture Flows
to/from the Local Field Equipment:

Local Field Equipment Local TOCs

• barrier system status


• rail crossing status


• right-of-way request notification


• roadway dynamic signage status


• signal control status


• signal fault data


• traffic images


• traffic situation data

Local TOCsLocal Field Equipment

• barrier system control


• roadway dynamic signage data


• signal control commands


• signal control device configuration


• signal control plans


• signal system configuration


• traffic detector control


• video surveillance control

Local Transit VehiclesLocal Field Equipment

• local signal priority request

WMATA Transit VehiclesLocal Field Equipment

• local signal priority request

National ITS Architecture Subsystems
mapped to the Local Field Equipment:

• Connected Vehicle Roadside Equipment Subsystem
• ITS Roadway Equipment Subsystem

National ITS Architecture Services
associated with Local Field Equipment:

• PT09 - Transit Signal Priority - WMATA -- (Graphic)
• PT09 - Transit Signal Priority - WMATA -- (Graphic)
• PT09 - Transit Signal Priority - NOVA -- (Graphic)
• PT09 - Transit Signal Priority - NOVA -- (Graphic)
• TM01 - Infrastructure-Based Traffic Surveillance - NOVA Local TOCs -- (Graphic)
• TM03 - Surface Street Control - NOVA Local TOCs -- (Graphic)