Environmental challenge of vehicle dispatching in marine container drayage
研究了海运集装箱短驳运输中考虑环境影响的车辆调度问题，提出一种新操作模式以减少碳排放、空箱移动和所需牵引车数量，并用模拟退火算法求解。
Abstract In marine container drayage (CD), which refers to the transport of goods over a short distance, empty containers (ECs) are required to be transported long distances between a terminal and a shipper/consignee by conventional transportation. This causes truck traffic congestion in harbor districts that increases CO 2 emissions (CO 2 EM). This study addresses the vehicle dispatch problem with respect to the environmental impact of marine CD, considering the tractor dwell time is long at the customer site due to cumbersome container loading/unloading (L/U). We model this problem as an extended version of the vehicle routing problem with precedence constraints to minimize the total CO 2 weighted travel distance. To improve CD operation in long L/U time, we propose a new practice for CD operations. Additionally, we develop a mixed integer programing model (MIP) for the new practice representation, and propose a Simulated Annealing (SA) based heuristic approach to solving the new practice instance. By implementing our proposed new operation, in a long L/U time, the CO 2 EM, EC move and number of tractors required can also be reduced by allowing uncoupled tractor move.