The invention discloses a method for early warning vehicles behind traffic abnormal points of sharp turn section of an expressway. The method comprises the following steps: firstly, judging whether the traffic of the sharp turn section of the expressway is abnormal or not, and obtaining traffic abnormal positions; calculating a driving track distance from a driver of the rear vehicle to the traffic abnormal point when the driver finds the traffic abnormal point; then calculating the maximum longitudinal acceleration of the rear vehicle when the rear vehicle runs on the sharp turn road section;calculating the driving distance when the rear vehicle starts uniform deceleration motion to the speed of 0 when finding a traffic abnormal point; judging the collision risk of the rear vehicle; grading the risks; and finally, according to different risk levels, carrying out personalized early warning on the rear vehicle. According to the early warning method provided by the invention, graded early warning can be carried out on coming vehicles with different rear driving conditions in a targeted manner, time is bought for a driver to carry out corresponding operation, and chain collision or secondary collision abnormity caused by front collision is avoided.

    本发明公开了一种对高速公路急弯路段交通异常点后方车辆进行预警的方法:首先判断高速公路急弯路段交通是否异常,获取交通异常位置;再计算后方车辆的驾驶人发现交通异常点时距离交通异常点的行驶轨迹距离;然后计算后方车辆在急弯路段行驶时的最大纵向加速度;再计算当后方车辆发现交通异常点时开始匀减速运动至速度为0时所行驶的距离;再判断后方车辆发生碰撞的风险;并将风险分为等级;最后根据不同的风险等级,对后方车辆进行个性化预警。本发明提供的预警方法可针对性的对后方不同行驶状况的来车进行分级别预警,为驾驶员做出相应操作争取时间,避免因前方碰撞而引发的连环碰撞或二次碰撞异常。


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    Title :

    Method for early warning vehicles behind traffic abnormal points on sharp turn section of expressway


    Additional title:

    一种对高速公路急弯路段交通异常点后方车辆进行预警的方法


    Contributors:
    WANG CHANG (author) / FU RUI (author) / GUO YINGSHI (author) / YUAN WEI (author)

    Publication date :

    2020-06-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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