Rule-based multi-constraint transit signal priority control strategy

In order to carry out the purpose of transit signal priority, by giving priority to transit, while not increasing negative impact on social vehicles, and improving operability, efficiency and effectiveness of the strategy, a rule-based multi-constraint transit signal priority control strategy is designed. The strategy consists of seven constraints, in order to solve conflicts between constraints maximum red times are set to ensure the benefits of non-priority vehicles. And two basic rules are designed for priority phase and non-priority phase, which can improve the effectiveness of transit through intersection. It is conducted from the results of VISSIM simulation that: under low, medium and high load of traffic volumes, there are nearly no differences of average delay per vehicle and person delay between two control strategies, while compared to actuated control strategy, the bus stopped delay of rule-based multi-constraint TSP control strategy are significantly reduced by 35%, 21% and 24%.