Research on Allocation and Dispatching Strategies of Rescue Vehicles in Emergency Situation on the Freeway

Allocation and dispatching strategies of rescue vehicles in emergency situation on the freeway are investigated in this paper. Three steps are proposed for rescue vehicles to arrive traffic accident point as fast as possible. Firstly, traffic accident level are cataloged based on severity of accident and other influencing factors. Then, which types and how many rescue vehicles are required for the specific traffic accident according to corresponding accident level. Finally, three dispatching methods are proposed and verified in a case study. This paper selected a traffic accident randomly happened on Hanning Freeway in Shaanxi Province as a case study. The result shows the application of the three methods in case study and contains optimal rescue vehicle dispatching method. This paper provides suggestions for emergency handling of traffic accidents on the freeway and gives an intelligent way to improve the management of the freeway.