Route planning of regional emergency evacuation based on lane modeling

In order to effectively solve the potential delay during emergency evacuation routes,a lane-based network flow model was presented,its objective was the minimum of whole evacuation cost,and its constraint conditions were eliminating crossing-conflicts,reducing confluence,flow conservation and non-negative,restricting the traffic capacities of nodes and arcs.The expansion network flow model based on lane level and the traditional node-arc network model based on road level were solved by adopting Lingo software respectively,and a network including four intersections was analyzed as an example.Analysis result indicates that compared to the traditional network model,the travel cost saves four hours per vehicle,and reduces by 25% through the lane-based extension network flow model,so the model can minimize evacuation cost,reduce delay caused by merging and crossing,and improve evacuation efficiency.2 tabs,6 figs,12 refs.