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  • 教授 硕士生导师
  • 入职时间:2000-07-01
  • 所在单位:交通运输工程学院
  • 职务:副主任
  • 学历:研究生(博士)毕业
  • 办公地点:中南大学 交通运输工程学院 长沙 韶山南路68号 铁道校区 交通楼315室
  • 性别:
  • 联系方式:maosheng.li@csu.edu.cn
  • 学位:博士学位
  • 在职信息:在职
  • 主要任职:MA student adviser
  • 毕业院校:中南大学 交通运输工程学院
  • 学科:交通运输工程
论文成果
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Safety evaluation of discontinuous lane design of intersection approach in China
  • 点击次数:
  • DOI码:10.1080/19439962.2018.1441937
  • 发表刊物:Journal of Transportation Safety & Security
  • 关键字:road marking design; surrogate safety analysis; ordered probit model; postencroachment time
  • 摘要:A special kind of road marking design denoted as discontinuous lane design is prevailing in most cities of China, in which a changeover portion between the upstream road segment and the approach of intersection is void of road markings. This article evaluates the road safety and traffic efficiency of the discontinuous lane design for the most typical case that three lanes upstream are followed by four approaching lanes to the intersection. A safety risk comparison was made between the discontinuous lane design and its counterpart continuous lane design by index of postencroachment time (PET). Then, using an ordered probit model, the PETs, representing the severity of traffic conflict, were linked to relevant variables including the traffic volume, the queue length of target lane on the approach, the queue length of the neighboring target lane, the upstream lane used by the vehicle, the vehicle speed before entering the discontinuous zone, and so on. It was found that the upstream lane has an important effect on traffic safety under discontinuous lane design. Continuous lane design is only recommended for intersection approaches with relatively stable right and left turning flows, and not appropriate for specific cases when the turning flows fluctuate significantly in daily periods.
  • 论文类型:期刊论文
  • 学科门类:交通运输工程
  • 文献类型:J
  • 是否译文:
  • 发表时间:2018-05-30
  • 发布期刊链接:https://doi.org/10.1080/19439962.2018.1441937