---

NRO Local TOCs

Status:

Existing

Definition:

The element captures non-VDOT signal systems in Northern Virginia. Examples of agencies with their own signal systems are the City of Alexandria, City of Fairfax, City of Falls Church, City of Fredericksburg, City of Manassas, City of Manassas Park, Arlington County, Town of Herndon, Town of Leesburg, and the Town of Vienna.

Stakeholder:

NRO Local Traffic Agencies

Architecture Flow Diagrams
which include NRO Local TOCs:

• NRO Local TOCs MATOC Center
• NRO Local TOCs National Weather Service
• NRO Local TOCs NRO Local Field Equipment
• NRO Local TOCs NRO Local Public Safety Centers
• NRO Local TOCs NRO Local Transit Centers
• NRO Local TOCs RITIS
• NRO Local TOCs Statewide Video Distribution Services
• NRO Local TOCs VDOT NRO MPSTOC - Signal Center
• NRO Local TOCs VDOT NRO MPSTOC - TOC/ATMS

Architecture Flows
to/from the NRO Local TOCs:

NRO Local TOCs MATOC Center

• emergency plan coordination


• incident information for public


• road network conditions

NRO Local TOCs NRO Local 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

NRO Local TOCs NRO Local Transit Centers

• emergency plan coordination


• incident information for public


• traffic control priority status

NRO Local TOCs RITIS

• emergency archive data


• incident information for public


• road network conditions


• traffic archive data

NRO Local TOCs VDOT NRO MPSTOC - Signal Center

• evacuation coordination


• road network conditions

NRO Local TOCs VDOT NRO MPSTOC - TOC/ATMS

• emergency traffic control information


• emergency traffic control request


• emergency traffic coordination


• evacuation coordination


• incident response coordination


• road network conditions

MATOC CenterNRO Local TOCs

• emergency plan coordination


• incident information for public


• road network conditions

National Weather ServiceNRO Local TOCs

• environmental conditions data status


• qualified environmental conditions data


• weather information

NRO Local Field EquipmentNRO 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

NRO Local Public Safety CentersNRO Local TOCs

• red light running system data

NRO Local Transit CentersNRO Local TOCs

• emergency plan coordination


• traffic control priority request


• transit and fare schedules


• transit incident information

Statewide Video Distribution ServicesNRO Local TOCs

• traffic images

VDOT NRO MPSTOC - Signal CenterNRO Local TOCs

• evacuation coordination


• road network conditions

VDOT NRO MPSTOC - TOC/ATMSNRO Local TOCs

• emergency plan coordination


• emergency traffic control information


• emergency traffic control request


• emergency traffic coordination


• evacuation coordination


• incident response coordination


• road network conditions

National ITS Architecture Subsystems
mapped to the NRO Local TOCs:

• Emergency Management Center Subsystem
• Traffic Management Center Subsystem
• Transportation Information Center Subsystem

National ITS Architecture Services
associated with NRO Local TOCs:

• MC06 - Work Zone Management - VDOT NOVA District -- (Graphic)
• PS09 - Region-wide Transportation Infrastructure Protection -- (Graphic)
• PT09 - Transit Signal Priority - WMATA -- (Graphic)
• PT09 - Transit Signal Priority - NRO -- (Graphic)
• TM01 - Infrastructure-Based Traffic Surveillance - NRO Local TOCs -- (Graphic)
• TM03 - Surface Street Control - NRO Local TOCs -- (Graphic)

National ITS Architecture Functional Requirements
associated with NRO Local TOCs:

TMC Incident Detection

1. The center shall receive inputs concerning upcoming events that would effect the traffic network from event promoters and traveler information service providers.

TMC Signal Control

1. The center shall remotely control traffic signal controllers.
2. The center shall accept notifications of pedestrian calls.
3. The center shall collect traffic signal controller fault data from the field.
4. The center shall collect traffic signal controller operational status and compare against the control information sent by the center.

TMC Regional Traffic Management

1. The center shall exchange traffic information with other traffic management centers including incident information, congestion data, traffic data, signal timing plans, and real-time signal control information.

TMC Incident Dispatch Coordination

1. The center shall coordinate information and controls with other traffic management centers.
2. The center shall receive inputs concerning upcoming events that would effect the traffic network from event promoters, traveler information service providers, media, border crossings, and rail operations centers.
3. The center shall share resources with allied agency centers to implement special traffic control measures, assist in clean up, verify an incident, etc. This may also involve coordination with maintenance centers.
4. The center shall coordinate planning for incidents with emergency management centers - including pre-planning activities for disaster response, evacuation, and recovery operations.