Research On Vehicle Speed Limit Of Urban Road Under Rain And Snow

At present,traffic accidents on urban roads caused by rain and snow are frequent and not rare.As an important part of the driving safety control system,the research on speed limit technology for driving safety in icy,snowy and rainy weather is to make accurate judgments on the severity of driving safety threats in the state of natural disasters,and then formulate countermeasures and take measures to take the initiative An important method to strengthen prevention and reduce the incidence of traffic accidents.However,there are still certain problems in the domestic speed limit for driving in rainy and snowy weather.In this paper,the speed limit of urban roads in rainy and snowy days,which have a greater impact on driving safety,is studied systematically.Research on the disaster-causing mechanism of rain and snow weather.Analyzed the possible impact of rain and snow on roads,drivers,driving and the environment and the causes of disasters,and then effectively determined the driving safety performance evaluation index.Research on the evaluation method of urban road safety performance under the conditions of ice,snow and rainfall.The simulation software ADAMS/Car simulates the driving time and speed of the vehicle at different steering wheel under disaster conditions such as icing,snow,rain,etc.,and sets different steering wheel rotation angles to simulate the catastrophic behavior of each road section on the curve.Operating status,in the event of icing,snow,short-term heavy rainfall and other disasters,the difference between the lateral displacement of the vehicle under natural disasters and the lateral displacement under normal conditions is used as an important indicator for the evaluation of driving safety performance,And limit the vehicle speed according to the simulation results.