Real-time Risk Assessment Model of Freeway Traffic in Rain and Fog Weather
According to the relative position between before-after vehicles or vehicles and obstacles after braking, a separate vehicle risk in different traffic flow states is divided into four levels.To discriminate real-time traffic status on road sections, the concept of critical density is brought in and the risk of four ranks corresponding to the critical speed are anti-calculated in free driving state and car-following state.By comparing critical speed with the average speed on road section, separate vehicle risk is converted into real-time risk of group vehicles, and real-time risk assessment model of highway traffic in rain and fog weather is established.Simulation results show that the low-density traffic flow will bring lager risk than high-density traffic flow in rain and fog etc disastrous weather; To reduce traffic risk of road section, effective measures are speed limit in low-density flow, speed limit in combination with shunt in high-density flow.
Driving risk Real-time risk assessment The relative position method In rain and fog weather High-density flow simulation
Fang Guo Wei Gu Fang Yuan
Hunan Communication Polytechnic,Changsha 410132,China Hunan Huagang Communications Planning & Design Research Institute,Changsha 410076,China
国际会议
上海
英文
2370-2375
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）