Regional ITS Architecture

TMC Situation Data Management Functional Area

Description

'TMC Situation Data Management' collects, assimilates, and disseminates vehicle probe data collected from roadside short range communications equipment and centers controlling transit vehicles, toll collection points, and route–guided vehicles. It estimates traffic and road conditions based on the aggregated probe data and disseminates this information to other centers.

Included In

Caltrans D11 Intermodal TMC

Functional Requirements

ID	Requirement
01	The center shall collect traffic probe data from vehicles via roadside field equipment.
02	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.
03	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.
04	The center shall collect probe data from payment administrative centers containing travel times between toll collection points for those vehicles equipped for electronic toll collection; the data may be aggregated and processed at the sending center.
05	The center shall collect operational status for the roadside probe data collection equipment.
06	The center shall collect fault data for the roadside probe data collection equipment for repair.
7	The center shall collect traffic data from probe–equipped emergency vehicles via emergency management centers; the data may be aggregated and initial link time calculations performed at the sending center.