Optimal Location of Adjacent Bus Stops on Condition of Bus Signal Priority

Both the layout of bus stops and bus signal priority are core parts of transit priority design.Buses must stop at pre-establish bus stops.This characteristic affect the buses arrival time at downstream intersections after they passed upstream intersection stop line,and the delay at downstream intersections was occurred.A delay calculating model for single bus passing the total coordinated intersection groups was built based on an off-line signal plan(a signal plan of passive signal priority strategy).Then an optimal location model for adjacent bus stops in a coordinated intersection group was built with the objective of minimizing average bus delay.The analyses of solutions of the proposed model indicate that optimal location of bus stops between adjacent intersections has much relationship with coordinating signal plan and the simple combination of optimal solution for single intersection are not the optimal solution for total coordinated intersection and bus stop groups.A field test and simulation were implemented on two coordinated signal control intersections and two bus stops.The results show that the solution of the model is close to the simulation results and the total average bus delay of the optimal location dramatically less than others solutions.