基于驾驶人需求的高速公路网交通标志效用评价

Evaluation on Traffic Sign Utility of Expressway Network Based on Driver’s Demand

随着我国高速公路网的快速发展,高速公路之间的互通节点逐年增多,原有交通标志往往不能满足现状高速公路网运营的要求,不仅给驾驶人带来走错出入口、行驶方向错误等问题,而且制约了高速公路网信息化数字化的发展。从驾驶人实际需求出发,通过问卷调查、调研分析和文献查阅,筛选影响驾驶人决策的关键指标,通过层析分析法得出各指标权重,建立了基于TOPSIS的交通标志效用评估模型。以G2京沪高速某路段为例,分析了本项目交通标志设置与最优方案的贴合程度,验证了评价模型的有效性。结果表明:该路段版面视认舒适度、信息选取需求满意程度、路径指引效果适宜度相对较低,为该路段的交通标志优化提升和后续路网的信息化数字化管理提供了依据。

With the rapid development of expressway network in China,the interchange nodes between expressways is increasing year by year,and the original traffic signs often cannot meet the requirements of the current expressway network operation.It not only brings some problems to drivers,such as wrong entrance and exit,wrong driving direction,but also restricts the development of informatization and digitalization of expressway network.Based on the actual needs of drivers,through questionnaire survey,research analysis and literature review,the key indicators that affect driver’s decision-making are selected,the weight of each indicator is obtained by using AHP,and the TOPSIS based traffic sign utility evaluation model is established.Taking a section of G2 Beijing-Shanghai expressway for example,the fitting degree between the traffic sign setting of the project and the optimal scheme is analyzed,and the effectiveness of the model is verified.The result shows that the visual comfort,information selection demand satisfaction and route guidance effect suitability of this section are relatively low,which provides a basis for the optimization and improvement of traffic signs in this section and the subsequent information digital management of the road network.