关键词: 铰链车, 右转内轮差, 区域范围, 交叉口, 行驶轨迹

Abstract:

In order to solve traffic safety problem at intersections caused by inner wheel difference of hinged vehicles, a method for determining range of inner wheel difference of the vehicles turning right was proposed, which considered geometric parameters of intersections and vehicle parameters. With vehicles at different model parameters in Jinyuan District and Qingxu County of Taiyuan City as research object, a calculation model was established based on changes of difference of right-turning inner wheels at different types of intersections, and trajectory of front inner wheel of tractors and rear wheel of trailers were generated and the difference range were calculated more accurately. Then, Python software was used to build a program for visualization of the range, and with coordinate values of front inner wheels of tractors and rear wheels of trailers at the same time point as evaluation index, driving trajectory data were extracted by utilizing Tracker software so as to verify the model. The results show that the maximum relative error between predicted value of the proposed method and the actual one is 8.32%, and average relative error is 5.12%, indicating that the method can effectively determine range of inner wheel difference of hinged vehicles turning right.

Key words: hinged vehicle, right-turning inner wheel difference, range, intersection, driving trajectory