借用对向车道通行的高速公路施工控制区梯级限速研究
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吕路(1991—),男,博士研究生,研究方向为道路安全与环境。E-mail:lvlu0426@tongji.edu.cn。

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U491.4

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国家自然科学基金项目(51978069);山东省交通运输厅科技计划项目(2019B32)


Study on Graded Speed Limit in Work Zone Crossovers for Expressway Construction
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    摘要:

    目的】为使车辆平稳快速地通过借用对向车道通行的高速公路施工控制区,对施工控制区梯级限速方案进行了研究。 【方法】首先,采集并分析不同施工控制区断面交通流速和车头时距变化;其次,根据车辆轨迹特征计算末级限速值,基于车辆减速运动特征和驾驶人注视特点制定施工控制区梯级限速方案;最后,构建驾驶模拟实验场景,通过安全与效率协调优化的评价指标对所建立的限速方案进行评价。【结果】结果表明:中分带开口区平均车速和车头时距最小。当中分带开口长度为70 m 的两车道时,形成以40 km/h为最终限速值、以20 km/h为降速幅值、以过渡区起点上游50 m为最终限速标志位置的变间距高速公路施工控制区限速系统。【结论】驾驶模拟实验表明,同《公路养护安全作业规程》(JTG H30—2015)中的两级限速方案相比,所建立的梯级限速方案可使施工控制区综合效率指数提高9.15%,综合安全指数提高27.62%。

    Abstract:

    Objective】To ensure the vehicles through the work zone crossovers for expressway construction smooth and fast, a graded speed limit plan for the traffic control zone was studied.【Method】Firstly, collect and analyze the traffic flow velocity and time headway in different traffic control zones. Secondly, according to the vehicle trajectory to calculate the value of the last speed limit sign, and a graded speed limit plan for the traffic control zone was formulated based on vehicle deceleration and driver gaze. Finally, the graded speed limit plan was evaluated by safety and efficiency indictors through driving simulator.【Result】The results show that the average speed and the time headway in work zone crossovers are the smallest. When the median width is 70 m, the final speed limit value should be 40 km/h, forming a graded speed limit system in expressway construction with a deceleration amplitude of 20 km/h and a final speed limit sign positioned in 50 m before the upstream of the transition area.【Conclusion】The driving simulation test shows that compared with the two-level speed limit scheme in JTG H30—2015, the comprehensive efficiency index of the traffic control zone under established scheme has increased by 9.15%, and the extensive safety index has increased by 27.62%.

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吕路,丁天,郭忠印,侯福金.借用对向车道通行的高速公路施工控制区梯级限速研究[J].华东交通大学学报,2024,41(1):1-10.
Lyu Lu, Ding Tian, Guo Zhongyin, Hou Fujin. Study on Graded Speed Limit in Work Zone Crossovers for Expressway Construction[J]. JOURNAL OF EAST CHINA JIAOTONG UNIVERSTTY,2024,41(1):1-10

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  • 收稿日期:2023-02-06
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  • 在线发布日期: 2024-03-20
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