In this paper , the relation among highway alignment , vehicle operating velocity , vehicle fuel consumption and vehicle dynamics is discussed synthetically . to evaluate and optimize the design of highway alignment , a " high alignment - vehicle move and system dynamic response " model has been established . by using the computer program of the system , which is written with visual c + + 6 . 0 , one could easily draw out the variation curves of vehicle operating velocity , vehicle fuel consumption and some certain vehicle dynamics index 公路线形设计以汽车行驶规律为出发点，本文尝试以汽车系统动力学的观点研究道路线形设计问题，针对目前设计中存在的一些问题，建立了“公路路线? ?汽车运行响应模型” ，分为行驶速度、耗油量预测和动力学响应计算两大模块，主要是为了克服传统汽车理论在指导公路路线设计时过于简化汽车，只考虑计算行车速度的弊端，力图通过建立“路线方案? ?行驶车速? ?力学响应”相互之间的量化关系模型，为公路线形指标的选取和优化提供一定的参考价值。
