• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Transportation Research Procedia >A Study of Collision Risk Estimation and Users Evaluation at Merging Section of Urban Expressway in Japan
【24h】

A Study of Collision Risk Estimation and Users Evaluation at Merging Section of Urban Expressway in Japan

机译：日本城市高速公路融合段碰撞风险估算与用户评价研究

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

For usability of urban expressway in Japan, there are some problems due to the limitation of spatial con-straint. As the result of the limitation, there are merging sections that do not have enough length and set a right-side entrance ramp which is connected to the passing lane, directly. Therefore, unfamiliar drivers such as female and/or elderly drivers are subjected to stress and aware of danger when they merge onto the expressway and it is necessary to measure these situations quantitatively from the viewpoints of both traffic conflict risk and users evaluation. The purpose of this study is to estimate collision risk by using Surrogate Safety Measure and evaluate Quality of Service for drivers at merging sections of urban expressway in Japan. We focused on each ve-hicle merging movements and traffic conflicts at three on-ramps, which has different geometries, by im-age processing technology. First, in order to elucidate the occurrences of collision risk in merging section, we analyzed the collision risk between a merging vehicle and a main lane vehicle by using the Possibility Index for Collision with Urgent Deceleration (PICUD) index. It is shown that the position of conflicts is affected by the amount of traffic volume. Second, we conducted discriminant analyses for the results of the PICUD estimation in order to reveal the influence factors of collision risk at each merging section. As the result of discriminant analyses, it is found that the percentage of merging position and traffic volume of main lane have a huge effect on collision risk for merging movement. In addition, both the percentage of heavy vehicles and the existence of other merging vehicle at a time trigger rear-end collision risk. Fur-thermore, we examined some countermeasures to reduce collision risk in objective merging sections by sensitivity analysis and proposed a Level of Service index which is based on the rank of rear-end collision risk considering users’ subjective evaluation.
机译：对于日本城市高速公路的可用性，由于空间约束的限制，存在一些问题。由于限制，有一些合并段没有足够的长度，并设置了一个直接与通过车道相连的右侧入口坡道。因此，不熟悉的驾驶员（例如女性和/或老年驾驶员）在合并到高速公路上时会承受压力并意识到危险，因此有必要从交通冲突风险和用户评估的角度对这些情况进行定量测量。这项研究的目的是通过使用“替代安全措施”来估计碰撞风险，并评估日本城市高速公路合并路段中驾驶员的服务质量。我们通过图像处理技术，重点研究了每个车辆在三个具有不同几何形状的坡道上的合并运动和交通冲突。首先，为了阐明合并路段中发生碰撞风险的情况，我们使用与紧急减速碰撞的可能性指数（PICUD）指数分析了合并车辆与主车道车辆之间的碰撞风险。结果表明，冲突的位置受流量的影响。其次，我们对PICUD估计的结果进行了判别分析，以揭示每个合并部分碰撞风险的影响因素。判别分析的结果表明，合并位置的百分比和主车道的通行量对合并运动的碰撞风险有很大的影响。此外，重型车辆的百分比和同时存在其他合并车辆的情况都会触发追尾事故的风险。此外，我们通过敏感性分析研究了降低目标合并部分中的碰撞风险的一些对策，并提出了基于用户主观评估的后端碰撞风险等级的服务水平指数。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号