Transit Signal Priority Upgrade
Expand existing signal priority for WMATA vehicles with DDOT signals
APTS09-2 - Transit Signal Priority - DDOT / WMATA
- The transit vehicle shall determine the schedule deviation and estimated times of arrival (ETA) at transit stops.
- 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 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 devia
- 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 field element shall notify controlling traffic management center and maintenance center that the signal timing has changed based on a signal preemption/priority request to help those centers determine whether a fault detected at the signal is a true m
- The field element shall respond to requests for indicator (e.g., signal) priority requests from transit vehicles at intersections, pedestrian crossings, and multimodal crossings.
- 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.
- The center shall analyze transit vehicle schedule performance to determine the need for priority along certain routes or at certain intersections.
- 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 provide transit operations personnel with the capability to control and monitor transit signal priority operations.
- The center shall send requests for priority along routes or at intersections to traffic management.
|AASHTO/ITE/NEMA||View List||NTCIP Center-to-Center Standards Group||Group|
|AASHTO/ITE/NEMA||View List||NTCIP Center-to-Field Standards Group||Group|
|ASTM||View List||Dedicated Short Range Communication at 915 MHz Standards Group||Group|
|ASTM/IEEE/SAE||View List||Dedicated Short Range Communication at 5.9 GHz Standards Group||Group|
|AASHTO/ITE/NEMA||NTCIP 1201||Global Object Definitions||Message/Data|
|AASHTO/ITE/NEMA||NTCIP 1202||Object Definitions for Actuated Traffic Signal Controller (ASC) Units||Message/Data|
|AASHTO/ITE/NEMA||NTCIP 1210||Field Management Stations (FMS) - Part 1: Object Definitions for Signal System Masters||Message/Data|
|AASHTO/ITE/NEMA||NTCIP 1211||Object Definitions for Signal Control and Prioritization (SCP)||Message/Data|
|AASHTO/ITE/NEMA||NTCIP 1214||Object Definitions for Conflict Monitor Units (CMU)||Message/Data|
|APTA||APTA TCIP-S-001 3.0.3||Standard for Transit Communications Interface Profiles||Message/Data|
|Stakeholder||Roles and Responsibilities|
|DDOT Transportation Operations Administration|
|Provide signal priority for transit vehicles.|
|WMATA - Washington Metropolitan Area Transit Authority|
|Coordinate with the local traffic operations centers for traffic signal priority.|