Local Signal Centers

Status: Existing

Description: The element captures agencies that operate signal systems in the Salem District with similar functionality.

Stakeholder: Local Public Works Agencies

Architecture Flow Diagrams
which include Local Signal Centers:

• Local Signal Centers Local Field Equipment
• Local Signal Centers Local Public Safety Centers
• Local Signal Centers National Weather Service
• Local Signal Centers VDOT Salem District Maintenance Residencies
• Local Signal Centers VDOT Southwestern TOC/ATMS

Architecture Flows
to/from the Local Signal Centers:

Local Signal Centers Local Field Equipment

• roadway dynamic signage data


• signal control commands


• signal control device configuration


• signal control plans


• signal system configuration


• traffic detector control

Local Signal Centers Local Public Safety Centers

• emergency traffic control information

Local Signal Centers National Weather Service

• environmental conditions data

Local Signal Centers VDOT Salem District Maintenance Residencies

• work plan feedback

Local Signal Centers VDOT Southwestern TOC/ATMS

• alert status


• incident information

Local Field EquipmentLocal Signal Centers

• right-of-way request notification


• roadway dynamic signage status


• signal control status


• signal fault data


• traffic images

Local Public Safety CentersLocal Signal Centers

• incident response coordination


• incident response status

National Weather ServiceLocal Signal Centers

• qualified environmental conditions data


• weather information

VDOT Salem District Maintenance ResidenciesLocal Signal Centers

• current infrastructure restrictions


• equipment maintenance status


• incident information


• maint and constr resource response


• maint and constr work plans


• road network status assessment


• work zone information

VDOT Southwestern TOC/ATMSLocal Signal Centers

• incident information

National ITS Architecture Subsystems
mapped to the Local Signal Centers:

• Archived Data User System Terminator
• Emergency Management Center Subsystem
• Maint and Constr Management Center Subsystem
• Traffic Management Center Subsystem

National ITS Architecture Services
associated with Local Signal Centers:

• MC05 - Roadway Maintenance and Construction - Salem District -- (Graphic)
• MC06 - Work Zone Management - Salem District -- (Graphic)
• MC06 - Work Zone Management - Salem District -- (Graphic)
• MC06 - Work Zone Management - Salem District -- (Graphic)
• TM01 - Infrastructure-Based Traffic Surveillance - Salem District Local Signal Centers -- (Graphic)
• TM03 - Surface Street Control - Salem District Local Signal Centers -- (Graphic)