基于偏离指数的指路标志优化模型研究

 为了克服指路标志设置中过于依赖个人经验、以定性为主、定量为辅、局限于单个交叉口的设置与评价的缺陷，从指路标志影响用户的路径选择及行驶阻抗这一角度出发，采用偏离指数来衡量指路标志设置方案的合理性和有效性，提出了一个可获得最优的指路标志设置方案的优化模型。模型充分考虑了各OD对的重要程度，可用于指导实践中的指路标志设置，以取得较好的指引效果。

Research on Optimization Model for Guide Sign Planning Based on Straying Index

Straying index was adopted to evaluate quantitatively the effect of planning scheme of guide sign's installation to reduce the cost of transportation, help road users make better route choice, and improve the conditions that guide sign planning in the past was done qualitatively more than quantitatively, limited to single junction and subject to individual experience of the planner. An optimization model considering the weightiness of different OD pairs was also proposed to get the optimum road sign planning scheme.Application shows that the planning scheme provided by the model was able to give more effective guidance information to road users.