Signal Coordination Models for Midblock Pedestrian Crossing and Adjacent Intersections

With the goal of improving pedestrians´ convenience and safety, signalized midblock crossings are increasingly installed in highly-populated areas. This research proposed a coordination control model for signalized midblock pedestrian crossing and adjacent intersections to enhance the efficiency the arterial. Both traffic and pedestrian movements are considered in a unified framework. A common cycle length model was developed based on original optimal cycle of pedestrian crossing and intersection. A green bandwidth maximization model for traffic movement of intersection and midblock pedestrian crosswalk is developed for offset calculation. The offset optimization problem is formulated as a Mix-Integer-Linear-Program which can be solvable by many algorithms. The results of simulation have shown that the performance of proposed model is better than isolated control scenario. The average vehicle delay of coordinated movements is decreased dramatically, while the impacts on pedestrian are limited.