A Simulation System for Vehicle Safety Operating Speed on the Freeway

In order to reduce the traffic accident on freeway, that is very necessary to control vehicle operating speed in freeway availably. the models have been established based on Multi-Rigd Body system Automatic Dynamic Analysis of Mechanical Systems (ADAMS) the models include Vehicle model, Road model, Vehicle and Road coupling model, Simulation module, vehicle safety status identify model, etc. and the system for safety operating speed Simulation and identify in highway had been empoldered. Using this simulation system, the operating status of each vehicle can be simulation analysed each vehicle drive under the affection factors include vehicle structure, performance and control mode, transportation environment and weather such as wind, rain, snow, fog and so on. And the rational value of speed limit can be confirmed through safety operating speed Simulation and identify in this system. the result of simulation in actual a section of a freeway indicate this system has a good feasibility.