Transit Vehicle Signal Priority Functional Area

Description

'Transit Vehicle Signal Priority' provides the capability for transit vehicles to determine eligibility for priority and request signal priority at signalized intersections, ramps, and interchanges through short range communication with traffic control equipment at the roadside.

Included In

DART Transit Vehicles
Fort Worth Transportation Authority Transit Vehicles
Public / Private Transit Vehicles
DFW International Airport Transit Vehicles

Functional Requirements

IDRequirement
01The transit vehicle shall determine the schedule deviation and estimated times of arrival (ETA) at transit stops.
02The transit vehicle shall send priority requests to traffic signal controllers at intersections, pedestrian crossings, and multimodal crossings on the roads (surface streets) and freeway (ramp controls) network that enable a transit vehicle schedule deviation to be corrected.
03The transit vehicle shall send the schedule deviation data and status of priority requests to the transit vehicle operator and provide the capability for the transit vehicle operator to control the priority system.
04The transit vehicle shall prevent a priority request from being sent when the transit vehicle cannot use the priority (e.g., when the transit vehicle makes a passenger stop on the approach to an intersection).