---

SWR Local Signal Centers

Status:

Existing

Definition:

The element captures agencies that operate signal systems in Southwestern Region with similar functionality.

Stakeholder:

SWR Local Public Works Agencies

Architecture Flow Diagrams
which include SWR Local Signal Centers:

• SWR Local Signal Centers National Weather Service
• SWR Local Signal Centers SWR Local Field Equipment
• SWR Local Signal Centers SWR Local Public Safety Centers
• SWR Local Signal Centers VDOT SWR Maintenance Residencies
• SWR Local Signal Centers VDOT SWRO TOC/ATMS

Architecture Flows
to/from the SWR Local Signal Centers:

SWR Local Signal Centers National Weather Service

• environmental conditions data

SWR Local Signal Centers SWR Local Field Equipment

• roadway dynamic signage data


• signal control commands


• signal control device configuration


• signal control plans


• signal system configuration


• traffic detector control

SWR Local Signal Centers SWR Local Public Safety Centers

• emergency traffic control information

SWR Local Signal Centers VDOT SWR Maintenance Residencies

• work plan feedback

SWR Local Signal Centers VDOT SWRO TOC/ATMS

• alert status


• incident information

National Weather ServiceSWR Local Signal Centers

• qualified environmental conditions data


• weather information

SWR Local Field EquipmentSWR Local Signal Centers

• right-of-way request notification


• roadway dynamic signage status


• signal control status


• signal fault data


• traffic images

SWR Local Public Safety CentersSWR Local Signal Centers

• incident response coordination


• incident response status

VDOT SWR Maintenance ResidenciesSWR Local 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 SWRO TOC/ATMSSWR Local Signal Centers

• incident information

National ITS Architecture Subsystems
mapped to the SWR 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 SWR Local Signal Centers:

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

National ITS Architecture Functional Requirements
associated with SWR Local Signal Centers:

MCM Work Zone Management

1. The center shall disseminate work zone information to other agencies and centers including traffic, transit, emergency management centers, other maintenance centers, traveler information centers, and the media.

TMC Signal Control

1. The center shall manage (define, store and modify) control plans to coordinate signalized intersections, to be engaged at the direction of center personnel or according to a daily schedule.
2. The center shall remotely control traffic signal controllers.
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 Evacuation Support

1. The center shall coordinate execution of evacuation strategies with emergency management centers - including activities such as setting closures and detours, establishing routes, updating areas to be evacuated, timing the process, etc.
2. The center shall coordinate planning for evacuation with emergency management centers - including pre-planning activities such as establishing routes, areas to be evacuated, timing, etc.

TMC Incident Dispatch Coordination

1. The center shall coordinate information and controls with other traffic management centers.
2. The center shall exchange incident information with emergency management centers, maintenance and construction centers, transit centers, information service providers, and the media including description, location, traffic impact, status, expected duration, and response information.
3. The center shall coordinate planning for incidents with emergency management centers - including pre-planning activities for disaster response, evacuation, and recovery operations.
4. The center shall exchange alert information and status with emergency management centers. The information includes notification of a major emergency such as a natural or man-made disaster, civil emergency, or child abduction for distribution to the public. The information may include the alert originator, the nature of the emergency, the geographic area affected by the emergency, the effective time period, and information and instructions necessary for the public to respond to the alert. This may also identify specific information that should not be released to the public.

MCM Roadway Maintenance

1. The center shall exchange information with administrative systems to support the planning and scheduling of maintenance activities. This information includes: equipment and consumables resupply purchase request status, personnel qualifications including training and special certifications, environmental regulations and rules that may impact maintenance activities, and requests and project requirements from contract administration.
2. The center shall provide emergency management and traffic management centers with information about scheduled maintenance and construction work activities including anticipated closures and impact to the roadway, alternate routes, anticipated delays, closure times, and durations.
3. The center shall receive equipment availability and materials storage status information from storage facilities to support the scheduling of roadway maintenance and construction activities.
4. The center shall respond to requests from emergency management and traffic management centers for hazard removal, field equipment repair, and other roadway maintenance.
5. The center shall collect current and forecast traffic and weather information from traffic management centers and weather service providers (such as the National Weather Service and value-added sector specific meteorological services).

MCM Winter Maintenance Management

1. The center shall assess the current status of all winter maintenance activities, including actual work activities performed, current locations and operational conditions of vehicles, materials and equipment inventories, field equipment status, environmental information, etc.
2. The center shall provide status information about scheduled winter maintenance activities including anticipated closures and impact to the roadway, alternate routes, anticipated delays, closure times, and durations. The information is provided to other management centers such as traffic, emergency, transit, traveler information providers, other maintenance centers, and the media.
3. The center shall respond to requests from emergency management and traffic management centers for hazard removal, field equipment repair, and other winter roadway maintenance.
4. The center shall receive equipment availability and materials storage status information from storage facilities to support the scheduling of winter maintenance activities.
5. The center shall collect real-time information on the state of the regional transportation system from other centers including current traffic and road conditions, weather conditions, special event and incident information and use the collected information to support winter maintenance operations.

MCM Work Activity Coordination

1. The center shall collect and respond to feedback concerning scheduled maintenance and construction activities with other management centers such as traffic, emergency, transit, and rail operations.
2. The center shall provide status information about scheduled maintenance and construction activities including anticipated closures and impact to the roadway, alternate routes, anticipated delays, closure times, and durations. The information is provided to other management centers such as traffic, emergency, transit, traveler information providers, other maintenance centers, multimodal transportation providers, rail operations, and the media.
3. The center shall provide work zone activities affecting the road network including the nature of the maintenance or construction activity, location, impact to the roadway, expected time(s) and duration of impact, anticipated delays, alternate routes, and suggested speed limits. This information may be augmented with images that provide a visual indication of current work zone status and traffic impacts.

MCM Incident Management

1. The maintenance center shall provide work zone activities affecting the road network during traffic incidents including the nature of the maintenance or construction activity, location, impact to the roadway, expected time(s) and duration of impact, anticipated delays, alternate routes, and suggested speed limits.
2. The maintenance center shall respond to requests from emergency management to provide maintenance and construction resources to implement response plans, assist in clean up, verify an incident, etc. This may also involve coordination with traffic management centers and other maintenance centers.