Abstract: Bus hook turn method can guarantee the left turn operation of buses at the left-turn prohibition intersection. It is meaningful to improve the intersection capacity and maintain the operation efficiency of the bus system. To solve the problem of the queue bus spillovers at waiting areas and the waste of all-red clearance time at such intersection, a layout scheme of three kinds of detectors is proposed based on the actuated control logic. The queue spillover automatic detection method, the automatic determination method for all-red time and the adaptive signal control flow are developed. An intersection at Shenyang City is taken as an example and filed data are collected. Simulations and evaluations are conducted in VISSIM software. Results show that in peak time the proposed method can reduce the average vehicle delay by 10.8% and reduce the maximum queue length by 9.8%. In off-peak hour, the average vehicle delay and maximum queue length can be reduced by 13.1% and 17.2% respectively.

Key words: engineering of communications and transportation system, adaptive signal control, bus, hook turn