Study on optimization of road traffic emergency evacuation under influence of rainfall
In order to organize the traffic emergency evacuation more safely in rainfall scenarios,a road section transmission model under dynamic network loading considering the influence of rainfall was established.By introducing into the"rainfall intensity-surface gathered water depth-traffic free flow speed"relationship equations,an optimization model of road traffic emergency evacuation was established,then the staged algorithm was designed,and the influence of rainfall intensity and sur-face gathered water depth on emergency evacuation optimization effect was studied.The results show that different rainfall in-tensities and surface gathered water depths have different influence on the evacuation efficiency,leading to the traffic conges-tion or exacerbating congestion degree.The research results can provide reference for the development of emergency plans for traffic evacuation under the influence of rainfall.
urban trafficemergency evacuationtraffic organization optimizationrainfall intensitysurface gathered water depth
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