Henrico County TOC

Status: Existing

Description: The Henrico County TOC serves Henrico County and includes computer software and control of Henrico County signals including emergency signal preemption.

Stakeholder: Henrico County

Architecture Flow Diagrams
which include Henrico County TOC:

• Henrico County TOC Henrico County TOC Field Equipment
• Henrico County TOC VDOT Richmond District TOC/ATMS

Architecture Flows
to/from the Henrico County TOC:

Henrico County TOC Henrico County TOC Field Equipment

• signal control commands


• signal control device configuration


• signal control plans


• signal system configuration

Henrico County TOC VDOT Richmond District TOC/ATMS

• device control request


• device data


• device status


• incident information


• road network conditions


• traffic images

Henrico County TOC Field EquipmentHenrico County TOC

• right-of-way request notification


• signal control status


• signal fault data

VDOT Richmond District TOC/ATMSHenrico County TOC

• device control request


• device data


• device status


• incident information


• road network conditions


• traffic images

National ITS Architecture Subsystems
mapped to the Henrico County TOC:

• Archived Data User System Terminator
• Traffic Management Center Subsystem

National ITS Architecture Services
associated with Henrico County TOC:

• PS01 - Emergency Call-Taking and Dispatch - Henrico County -- (Graphic)
• PS03 - Emergency Vehicle Preemption - Henrico County -- (Graphic)
• TM03 - Traffic Signal Control - Henrico County -- (Graphic)
• TM07 - Regional Traffic Management (PSAP I-64 and I-95 CIP) -- (Graphic)