Under the premise of ensuring the safety of hazardous chemicals transport vehicles

in order to solve the path optimization problem more quickly

a quasi-decision tree pruning based optimization method is proposed. Based on the overall planning and local optimization of the vehicle planning program

in order to take full use of the optimal path information of the initial planning

during the transportation of hazardous chemicals vehicles

a quasi-decision tree pruning method is proposed for local optimization

thus the searching speed is improved. The feasibility of this method was verified by path planning between Beijing Petroleum Co. Ltd. of China Aviation Oil and Beiyuan gas station of China Sinopec.