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Click on a Project Inventory element from the list above to view functional requirements.
On-board Transit Signal Priority
- The 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).
- The 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.
- The 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.
- The transit vehicle shall determine the schedule deviation and estimated times of arrival (ETA) at transit stops.
Remote Transit Information Services
- The public interface for travelers shall present information to the traveler in a form suitable for travelers with physical disabilities.
- The public interface for travelers shall provide support for general annunciation and/or display of imminent arrival information and other information of general interest to transit users.
- The public interface for travelers shall collect and present to the transit traveler information on transit routes, schedules, and real-time schedule adherence.
- The public interface for travelers shall collect and provide real-time travel-related information at transit stops, multi-modal transfer points, and other public transportation areas.
Roadway Signal Priority
- The field element shall respond to signal priority requests from transit vehicles.
TMC Multimodal Coordination
- The center shall exchange information with transit management centers including details current transit routes, the level of service on each route, and the progress of individual vehicles along their routes.
- The center shall respond to requests from transit management centers for signal priority at one or more intersections along a particular transit route.
TMC Signal Control
- The center shall remotely control traffic signal controllers.
- The center shall maintain traffic signal coordination including synchronizing clocks throughout the system.
- The center shall manage boundaries of the control sections used within the signal system.
- The center shall implement control plans to coordinate signalized intersections based on data from sensors.
- 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.
- The center shall collect traffic signal controller fault data from the field.
- The center shall collect traffic signal controller operational status and compare against the control information sent by the center.
- The center shall accept notifications of pedestrian calls.
Transit Center Signal Priority
- The center shall provide transit operations personnel with the capability to control and monitor transit signal priority operations.
- The center shall define business rules that govern use of transit vehicle signal priority, communicate these rules to the transit vehicle, and monitor transit vehicle requests for priority at signalized intersections.
- The center shall send requests for priority along routes or at intersections to traffic management.
- The center shall analyze transit vehicle schedule performance to determine the need for priority along certain routes or at certain intersections.
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