论文部分内容阅读
为解决车道变换行为对交通运行安全影响的定量分析难题,基于车辆和驾驶员行为特性,构建车道变换行为期望运行轨迹,提出基于缓和曲线的轨迹形式,并结合车道变换行为引发的4种碰撞形式,在车辆运行纵向和横向分别构建安全运行判断方程和安全运行限制方程,分析安全距离对运行速度和车辆侧向加速度梯度的敏感度,给出车道变换行为安全运行判断方程的应用案例。研究结果表明,侧向加速度的变化梯度直接影响车道变换的安全性。
In order to solve the problem of quantitative analysis of the impact of lane change on traffic safety, the trajectory of lane change behavior is constructed based on vehicle and driver behavior characteristics, and the trajectory form based on the transition curve is proposed. Combining the four types of collision caused by lane change behavior , The safety operation judgment equation and the safety operation limit equation are respectively constructed in the longitudinal and transverse directions of the vehicle operation. The sensitivity of the safety distance to the operation speed and the lateral acceleration gradient of the vehicle is analyzed. The application cases of the judgment equation of the safety behavior of the lane change behavior are given. The results show that the gradient of lateral acceleration directly affects the safety of lane change.