摘要
为研究立交桥区多级预告标志现状设置效用,以立交桥匝道类型、三级预告标志设置情况为控制因素,开展驾驶模拟实验获得车辆行驶状态数据,采用重复测量方差分析及LSD两两对比分析方法分析7种指标。结果表明:7种指标中仅换车道次数呈显著性差异。深入分析换车道行为特征,分析结果表明:预告标志对换车道行为的影响与立交桥型指路标志是否设置无关;定向、半定向、环形匝道条件下,设置预告标志将增加作用范围内换车道次数,且关键增加区域位于第三级预告标志前100 m至后方300 m范围内;设置预告标志将提高第2、3次换车道人员比例,分别提高14.61%、2.37%,有效改善驾驶员换车道行为。
In order to study the utility of multi-level advance guide signs in the overpass area,a driving simulation experiment was carried out to obtain vehicle driving status data,taking the type of ramp and the setting of three-level advance guide signs as control factors. Seven indicators were analyzed by repeated measurement variance analysis and LSD pairwise comparison analysis method. The results show that: there are significant differences only in the number of lane changes among the seven indicators. From the in-depth analysis of lane change behavior characteristics,it is indicated that the influence of advance guide signs on lane-changing behavior has nothing to do with the installation of overpass type guide signs. Under directional,semi-directional and circular ramp conditions,setting advance guide signs will increase the number of lane changes in influence range. Moreover,the key increase area is located in the range from 100 m before to 300 m behind of the third level advance guide sign. Setting advance guide signs will increase the proportion of people who change lanes for the second and third time by 14. 61% and 2. 37% respectively,which will effectively improve drivers' lane change behavior.
引文
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