Capacity Analysis Of Hook-turn Signalisied Intersection

In recent years,local governments construct rapid transit lines even tram lines,therefore set dedicated transit lanes to execute the national "transit priority" strategy.There will thus not enough space for dedicated left-turning lanes setting in the finite urban roads,and then an additional stage for protected right turn movements cannot be utilized.However,the hook-turn scheme can avoid the conflicts between left-turning vehicles and through vehicles,without additional lanes or dedicated signal phases.It has been widely used in intersections with tram in Australia providing a new solution for this Chinese situation.This paper focuses on capacity analysis of the hook-turn signalized intersection based on an actuated traffic control algorithm.We use VISSIM software to simulate the operation of hook-turn signalized intersection based on 80 different traffic volume scenarios.We use conventional right-turning intersection as the base case compared with hook-turn signalized intersection in terms of numbers of vehicles passing the intersection,numbers of pedestrians passing the intersection,average delay of vehicles,and average of vehicle stops.The study shows that:comparing with conventional left-turning,when the total vehicle volume and the ratio of right-turning vehicles are high,the hook-turn scheme obviously increases the vehicle passing number of through and left-turning movements,obviously decreases the average delay and stops of vehicle through and left-turning movements;and the vehicle flow in hook-turn signalized intersection yields lower effects from pedestrian flow,especially the through and left-turning movements.