无专用左转相位十字形交叉口左转导向线计算模型
发布时间：2018-11-21 14:43
【摘要】：为了规范无专用左转相位下左转车辆的行驶秩序,建立了针对十字形交叉口的左转导向线计算模型。该模型包括内侧和外侧左转导向线计算模型两个部分。通过视频图像处理技术提取左转车辆全时空信息,发现使用移位指数函数拟合车辆左转轨迹结果最优,并将其作为左转导向线计算模型的基本形式。结合交叉口的几何条件,分析了避免左转车辆与对向直行、对向左转车辆冲突的临界条件,确定冲突点位置。在此基础之上,根据左转起始点、结束点和冲突点三点坐标对模型参数进行标定。最后,给出了模型的计算案例。研究成果能够为十字形交叉口左转导向线合理有效的渠化设计提供参考。
[Abstract]:In order to standardize the driving order of left-turn vehicles without special left-turn phase, a model of left-turn guide line for cross intersection is established. This model includes two parts: inner and outer left turn guide line calculation model. The video image processing technique is used to extract the whole space-time information of the left-turn vehicle. It is found that the shift index function is used to fit the result of the left-turn trajectory of the vehicle, and it is regarded as the basic form of the left-turn guide line calculation model. Combined with the geometric conditions of intersection, the critical conditions for avoiding the conflict between the left-turn vehicle and the opposite turning vehicle are analyzed, and the position of the conflict point is determined. On this basis, the model parameters are calibrated according to the three-point coordinates of the starting point, the end point and the conflict point of the left turn. Finally, a case study of the model is given. The research results can provide a reference for the rational and effective channelization design of the left-turn guide line of cross-shaped intersection.
【作者单位】： 吉林大学交通学院;吉林市公安局交警支队;
【基金】：国家自然科学基金项目(51278220;51278520) 吉林省科技发展计划重点项目(20130206093SF)
【分类号】：U491.23
，
本文编号：2347277
[Abstract]:In order to standardize the driving order of left-turn vehicles without special left-turn phase, a model of left-turn guide line for cross intersection is established. This model includes two parts: inner and outer left turn guide line calculation model. The video image processing technique is used to extract the whole space-time information of the left-turn vehicle. It is found that the shift index function is used to fit the result of the left-turn trajectory of the vehicle, and it is regarded as the basic form of the left-turn guide line calculation model. Combined with the geometric conditions of intersection, the critical conditions for avoiding the conflict between the left-turn vehicle and the opposite turning vehicle are analyzed, and the position of the conflict point is determined. On this basis, the model parameters are calibrated according to the three-point coordinates of the starting point, the end point and the conflict point of the left turn. Finally, a case study of the model is given. The research results can provide a reference for the rational and effective channelization design of the left-turn guide line of cross-shaped intersection.
【作者单位】： 吉林大学交通学院;吉林市公安局交警支队;
【基金】：国家自然科学基金项目(51278220;51278520) 吉林省科技发展计划重点项目(20130206093SF)
【分类号】：U491.23
，
本文编号：2347277
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