Simulation Analysis And Countermeasure Of The Influence Of Crosswind On Road Traffic Safety

With the rapid development of China’s highway and the speed of increase, people automobile driving stability, safety and comfort to the growing demand. Because of the prevalence of natural wind, the aerodynamic characteristics of a vehicle traveling on the road frequently affected crosswind. At higher vehicle speed, if subjected to high speed crosswind effect, the driving stability, handling characteristics and comfort will be significantly reduced, in extreme cases will make the car ride from the correct route and even rollover occurred serious security problems. In order to mitigate the effects of crosswinds, the driver needs to continuously adjust the steering wheel or reduce speed, which can lead to driver stress, premature fatigue and increase the risk of driving. Research crosswind influence and propose countermeasures to protect the safety of great practical value for improving the crosswind road traffic on high-speed driving stability.In this paper, random variations crosswind gusts as analog model to determine the size of carts and car-based truck models typical usage conditions, application dynamics simulation software Trucksim and Carsim carts and trolleys were constructed vehicle model, consider the vehicle speed, wind speed Factors wind, load, centroid height, the road surface friction coefficient of the vehicle in a crosswind done a lot of simulation and analysis, and lateral deviation amount of 0.5m for automotive safety driving in crosswind threshold. Determine the speed value car safe driving under different wind grade. Effects of different grades according to wind speed of the car, crosswind effect divided into four grades, grade Ⅰ, security; Ⅱ grade, relatively safe; grade Ⅲ, more dangerous; grade Ⅳ, dangerous, and take different precautions responses to danger level to ensure road safety. Proposed wind speed monitoring systems and intelligent information distribution system equipment layout, given the system operational processes and practicable, to provide guidance for the highway construction crosswind monitoring and early warning systems, help to enrich the road sector crosswind affect traffic Research safe..