In order to scientifically plan the occupation of roads for rescue vehicles in the local sudden disaster,by consider-ing the number of intersections used by rescue vehicles on the road network,with the aim of the quick arrival of rescue vehicles to the disaster area,mixed integer linear programming model of rescue traffic optimization was developed.Considering that the upper limit of the restriction value for the number of intersections used by rescue vehicles was an unknown parameter and there was no constraint to limit it in the rescue traffic optimization model,two-stage solving algorithm was designed.Based on the pro-posed model and algorithm,the intersection choice of rescue vehicles and its impact on rescue traffic route choice and rescue traf-fic operation efficiency were analyzed,and the suggestion of rescue traffic route choice was proposed.The results show:by re-stricting the number of intersections used by rescue vehicles on the road network,different optimal rescue routes can be obtained and road occupation can also be reduced without delaying the arrival of rescue vehicles in the disaster area.Therefore,adjusting the number of intersections through which rescue vehicles pass on the road network can be used to optimize the allocation of road network resources.
关键词
交通应急管理/交叉口数量约束/救援交通优化/混合整数线性规划/两阶段算法
Key words
traffic emergency management/intersection number restriction/rescue traffic optimization/mixed integer linear programming/two-stage solving algorithm
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