Bus Signal Priority Strategy for Reducing Passenger Delays

Bus signal priority at signalized intersections has demonstrated as an efficient and realizable approach to reduce bus delays. However the impact on passenger delays still needs to be analyzed after bus signal priority. This paper proposes a passenger delays reduction model by using the delay triangle. Taking a two-phase signalized intersection for example, it is found that the passenger delays reduction is relevant to the bus arrival rate and the time of green extension or red truncation. In order to minimize passenger delays, dynamic priority strategy is put forward which determines the time of green extension or red truncation according to the bus arrival rate. The simulation results present that passenger delays can be reduced by using dynamic priority strategy significantly compared with the original priority strategy.