车辆换道交互行为分析和建模

Analysis and Modeling of Vehicle Interactions during Lane-changing Process

运用运动学理论与方法,以换道过程中目标车道上的跟随车为研究对象,对跟随车与换道车之间的交互行为进行分析,建立了自由换道、强制换道和协作换道过程中跟随车与换道车之间的最小安全距离模型。利用汽车驾驶电子学习室对不同状态的交通进行了仿真分析,并进行了数理统计分析。结果表明:所建模型可以对实际交通车辆换道进行合理描述;在试验与实际道路交通场景中,车辆换道需求间距存在一定的误差,主要原因是在实际交通场景下,驾驶行为是综合考虑多种因素后的结果;在交通流密度较高的道路上,协作换道可以大大地提高车辆行驶安全性、交通流稳定性及道路通行效率。

By the theory and method of dynamics,the interaction between the following vehicle and the lanechanging vehicle is analyzed regarding the following vehicle in the target lane as the research object during lane-changing process,and the models of the minimum safety distance in different lane-changing process（ free,forced and cooperative） are respectively established. The different traffic states is simulated by vehicle driving e-learning room,and the mathematical analysis is also conducted. The result shows that（ 1） the developed models can rationably elaborate the actual lane-changing situation;（ 2） there exist some errors of the lane-changing required distance between the experiments and the actual traffic scenes,which are resulted from the fact that the driving behavior is the result considering various factors;（ 3） on the road with higher traffic flow density,the cooperative lane-changing can greatly improve the safe driving of vehicles,the stability of traffic flow and the efficiency of roads.