WRTA Bus Traffic Signal Priority
Description
Study key transit corridors for applicability of bus traffic signal priority to improve transit travel time. Implement transit signal priority on traffic signals on identified corridors.
Status
Planned
Timeframe
Medium
Geographic Scope
Public Transportation
Service Scope
Costs - $500,000; Operational & Maintenance Costs (per year) $1,000 per signal.
Stakeholders
City of Youngstown Street Department
Western Reserve Transit Authority (WRTA)
Inventory
City of Youngstown Field Equipment
City of Youngstown Traffic Signal System
Services
APTS09-1 - Transit Signal Priority - WRTA
Functional Areas
On-board Transit Signal Priority
- The transit vehicle shall determine the schedule deviation and estimated times of arrival (ETA) at transit stops.
- 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 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 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 field element shall respond to requests for indicator (e.g., signal) priority requests from transit vehicles at intersections, pedestrian crossings, and multimodal crossings.
- 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 malfunction or due to a signal override.
- The center shall remotely control traffic signal controllers.
- The center shall collect traffic signal controller operational status and compare against the control information sent by the center.
- The center shall collect traffic signal controller fault data from the field.
- The center shall implement control plans to coordinate signalized intersections, under control of center personnel, based on data from sensors and surveillance monitoring traffic conditions, incidents, emergency vehicle preemptions, the passage of commercial vehicles with unusual loads, equipment faults, pedestrian crossings, etc.
Interfaces
Standards
| SDO | Document ID | Title | Type |
|---|---|---|---|
| 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 |
Operational Concepts
| Stakeholder | Roles and Responsibilities |
|---|