Surveillance Upgrade

The center shall distribute road network conditions data (raw or processed) based on collected and analyzed traffic sensor and surveillance data to other centers.
The center shall monitor, analyze, and store traffic sensor data (speed, volume, occupancy) collected from field elements under remote control of the center.
The center shall respond to control data from center personnel regarding sensor and surveillance data collection, analysis, storage, and distribution.
The center shall support an interface with a map update provider, or other appropriate data sources, through which updates of digitized map data can be obtained and used as a background for traffic data.

The center shall aggregate collected traffic probe data, calculate route segment travel times, route segment speeds, and route usage, and disseminate to other centers.
The center shall collect traffic probe data (speeds, travel times, etc.) from appropriately equipped vehicles and short range communications equipment.

The center shall assimilate current and forecast traffic conditions based on collected probe data and distribute to other centers for dissemination to travelers.
The center shall collect fault data for the roadside probe data collection equipment for repair.
The center shall collect operational status for the roadside probe data collection equipment.
The center shall collect road condition data from probe-equipped transit vehicles via transit management centers; the data may be aggregated and preliminarily processed at the sending center.
The center shall collect traffic data from traveler information centers based on data from their subscriber vehicles; the data may be aggregated and initial link time calculations performed at the sending center.
The center shall collect traffic probe data from vehicles via roadside field equipment.

The center shall collect and store sensor (traffic, pedestrian, multimodal crossing) fault data and send to the maintenance center for repair.
The center shall collect and store sensor (traffic, pedestrian, multimodal crossing) operational status.
The center shall exchange data with maintenance centers concerning the reporting of faulty equipment and the schedule/status of their repair. Information exchanged includes details of new equipment faults, and clearances when the faults are cleared.
The center shall support an interface with a map update provider, or other appropriate data sources, through which updates of digitized map data can be obtained and used as a background for traffic maintenance data.

Source	Architecture Flows	Destination
Private Traffic Detection Providers	road network traffic probe data	DDOT TMC
Private Traffic Detection Providers	road network traffic probe data_ud	RITIS

SDO	Document ID	Title	Type
AASHTO/ITE/NEMA	View List	NTCIP Center-to-Center Standards Group	Group

Stakeholder	Roles and Responsibilities

District of Columbia ITS Architecture