Abstract: 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 100m before to 300m 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.

Key words: traffic and transportation engineering, interchange area, advance guide signs, driving simulation, lane change behavior

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。

关键词: 交通运输工程, 立交桥区, 预告标志, 驾驶模拟, 换车道行为