What is TSP (Transit Signal Priority)?

Transit Signal Priority Benefits

Transit Signal Priority (TSP) is a Advanced Traffic and Priority Management Systems or mechanism to provide special treatment and reduce dwell time to transit vehicles such as bus, rapid transit vehicle, railroad car, water vehicle, municipal vehicles, law enforcement and fire safety vehicle at signalized intersections.

Transit Signal Priority system requires some hardware equipment vehicle detectors and specialized traffic signal controllers.      

Types of Transit Signal Priority:

The TPS system can be categorised in several ways based on its function and uses, some of them are pointed bellow.      

  • Passive priority
  • Early green (red truncation)
  • Green extension
  • Actuated transit phase
  • Phase insertion
  • Phase rotation
  • Adaptive/real-time control 
Transit Signal Priority Strategies: 


There are different TSP stratiges are available, implemented based on the requirements. 

  • Adaptive Priority
  • Conditional Priority
  • Actuated Priority 

Benefits for Transit Signal Priority System in urban areas?   

Transit Signal Priority widely proffered to manage metropolitan and urban traffic. TSP significantly reduces transit delay for emergency and public transport vehicles. Studies say TSP reduces travel time around 20% and reduces delay up to 50% for bus during the rush hours. 

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