Implementing traffic signal priority for a light-rail transit line in Toronto, Canada allowed system operators to remove one vehicle from service and maintain the same level of service to passengers.

6-10 August 2000

Summary Information

This paper summarizes three implementations of transit signal priority in North America. While the paper mainly discusses the institutional and technical elements of each implementation, it does highlight some impacts.


After implementing traffic signal priority for a light-rail transit (LRT) line along an urban arterial in Toronto, system operators were able to remove one vehicle from service and maintain the same level of service to passengers along the corridor. This reduction in equipment reduced operating costs. However, the transit agency had some concern with system operations at intersections with near-side LRT stops. The system caused increased delay to the transit vehicle by extending the green time while the vehicle dwells at the stop, typically reaching the maximum phase length permitted before the vehicle finishes allowing passengers to board. This increases the time that the vehicle must wait at the stop for the following green phase. The system operators have also received complaints regarding increases in pedestrian delay due to the signal priority system.

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Transit Signal Priority: A Comparison of Recent and Future Implementations

Author: Cima, Bart, et al.

Published By: Paper presented at ITE 2000 Annual Meeting. Nashville, Tennessee

Source Date: 6-10 August 2000


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Goal Areas


Related Metropolitan Integration Links

Link 16a: Transit Management to Arterial Management

Typical Deployment Locations

Metropolitan Areas


bus priority, traffic signals, TSP

Benefit ID: 2000-00148