Abstract: This paper proposed the traffic signal optimization method for the midblock street crosswalk between coordinated adjacent intersections which introducing the pedestrian waiting tolerance limit time as one of the constraints of the signal timing optimization. The method takes the common red time of the two intersections as the crosswalk’s green time at first. If the common red time is not sufficient for the pedestrian crossing safely, it builds delay functions by using of motorcade dispersion and traffic flow rate relationship, and works out timing optimization parameter whose objective is to minimize the total vehicle delay. The result shows that this method may ensure the pedestrian crossing safety and reduce the pedestrian delay.

Key words: signal optimization, crosswalk, delay model, coordinated control, pedestrian