Examining traffic conflicts of up stream toll plaza area using vehicles' trajectory data
Examining traffic conflicts of up stream toll plaza area using vehicles' trajectory data
复制标题
利用车辆轨迹数据检查上游收费广场区域的交通冲突
DOI：
10.1016/j.aap.2019.01.034
复制
发表时间：
2019
影响因子：
5.9
通讯作者：
Zheng Ou
中科院分区：
文献类型：
--
作者：
Xing Lu;He Jie;Abdel Aty Mohamed;Cai Qing;Li Ye;Zheng Ou
尽管电子收费系统(ETC)作为收费广场区域的重要组成部分具有公认的好处，但电子收费(ETC)车辆和人工收费(MTC)车辆在收费广场分流区域的混合交通被认为对车辆构成危险，其中车辆复杂的分流和过街行为会增加碰撞风险。因此，对上游收费广场区域的车辆碰撞风险进行研究具有重要意义。采集了南京市一个典型的收费广场中国的视频数据，并利用基于OpenCV的自动分析系统提取了车辆轨迹数据。提出了一种延长的碰撞时间(TTC)来评价车辆的碰撞风险。随后，比较了不同收费类型、目标车道和位置的车辆对车辆碰撞风险的不同影响。在此基础上，建立了随机参数Logistic模型，考察了解释因素对车辆转向或调整车道位置时碰撞风险的影响。结果表明，MTC车辆在收费广场分流区域的碰撞风险最高，不同目标收费车道的车辆对碰撞风险的影响存在显著差异。此外，如果车辆靠近收费车道，并被繁忙的交通包围，则可能会发现更危险的情况。另据证实，与MTC和ETC车辆混合行驶会增加收费广场分流区域的撞车风险。预期研究结果可协助工程师及营办商选择适当的工程及交通控制方案，以加强收费广场分流区域的安全。
Despite the recognized benefits of electronic toll collection (ETC) system as an important part of toll plaza area, the mixed traffic of electronic toll collection (ETC) vehicles and manual toll collection (MTC) vehicles in the toll plaza diverging area are considered risky to vehicles, in which complex diverging and crossing behavior of vehicles would increase the collision risks. Therefore, it is vitally important to investigate the vehicle collision risk in the up stream toll plaza area. Video data are collected from a typical toll plaza in Nanjing, China, and vehicle trajectory data are extracted using an automated analysis system based on OpenCV. An extended Time-To-Collision (TTC) is proposed to evaluate the vehicle collision risk. Subsequently, the different effects on vehicle collision risk of vehicles with different toll collection types, target lanes and locations are compared. Furthermore, the random parameters logistic model is developed to investigate the effects of explanatory factors on the collision risk of vehicles diverging or adjusting their lane position. The results suggested that the MTC vehicles have the highest collision risk in the toll plaza diverging area and there are significant different effects on collision risk among vehicles with different target toll collection lanes. Further, more dangerous situations could be found for a vehicle if it is closer to the toll collection lanes and surrounded by heavy traffic. It is also confirmed that mixed traffic with MTC and ETC vehicles could increase the crash risk in the toll plaza diverging area. It is expected that the findings could help engineers and operators select the appropriate engineering and traffic control solutions to enhance the safety at the toll plaza diverging area.