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现有规范对一级公路和二级公路的最小平面交叉间距做了规定,但对低等级公路的平面交叉最小间距没有明确,低等级公路同样需要控制接入间距以保障公路的机动性和安全性。通过对影响最小接入间距影响因素的分析,采用功能区分析法研究低等级公路最小接入间距。基于开发的车辆连续速度跟踪观测与同步分析系统,对筛选的5个典型接入口进行观测,获得接入口入口引道和出口引道车辆实时位置、速度和加速度数据,并将速度数据与车型和转弯信息相匹配,从而分析车辆在接入口的速度和加速度特性,研究确定功能区长度和最小接入间距,成果可为规范编制和接入控制提供参考。
The existing norms of the first-class highways and secondary roads, the minimum plane crossing spacing is provided, but the low-level road cross-sectional minimum spacing is not clear, low-grade roads also need to control the access spacing in order to protect the road mobility and safety Sex. Based on the analysis of the influencing factors affecting the minimum access spacing, functional area analysis was used to study the minimum access spacing of low-grade highways. Based on the developed vehicle continuous speed tracking observation and synchronization analysis system, the five typical access ports were selected for observation, and the real-time position, velocity and acceleration data of the entrance entrance exit and exit exit access were obtained. Cornering information to match, so as to analyze the speed and acceleration characteristics of the vehicle at the access port, and to study and determine the length of the function zone and the minimum access spacing. The results can provide reference for the standard preparation and access control.