1. 山区公路回头曲线车辆横向加速度特性研究.
- Author
-
陈钦, 陈海源, 王晓辉, 张晓波, and 徐进
- Abstract
In order to clarify the lateral acceleration characteristics of vehicles in the turning curve section of low-grade highway in mountainous areas, a section of mountain road with 12 reversing curve sections in Pengshui County, Chongqing was selected as the experimental object, and a driving test of 20 drivers was carried out. The vehicle operating parameters in the driving state, including speed, trajectory and lateral acceleration, etc., were analyzed for the amplitude characteristics, change mode and peak position distribution of lateral acceleration in the turning curve segment. The results show as follows. The overall variation characteristics of vehicle lateral acceleration in the reverse curve segment can be divided into three stages: increasing stage of entering, stable stage of turning and decreasing stage of exiting. According to the overall change trend of 85 th percentile value of lateral acceleration, the lateral acce-leration can be divided into four variation modes. The 85 th percentile value of left and right lateral acceleration is 3.85 m/s² and 3.69 m/s² respectively. Compared with the general curve, the driver can tolerate a higher degree of lateral discomfort in the curve. In the process of left and right turns, the lateral peak acceleration of each turn is mainly concentrated between the middle point of the curve and the slow point of the circle, that is, the latter half of the circle curve. [ABSTRACT FROM AUTHOR]
- Published
- 2022