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美国联邦公路管理局(FHWA)开发的交互式公路安全设计模型(IHSDM)自推出以来,以其先进的理念和可定量操作性在很多国家和地区得到了应用,而我国对IHSDM的关注相对较少。针对此现状,文章介绍了可以应用于方案设计阶段的交互式道路安全设计模型,对交互式道路安全设计模型的概念、结构、研究难点作了分析。同时,针对我国双车道公路线形设计中存在的线形一致性差等问题,重点介绍了其中的设计一致性模型,并以实例说明了其实际应用过程。最后指出了IHSDM在我国实际应用中尚需改进的方面,旨在从路线线形设计的角度去提高公路的安全性。
Since its introduction, the IHSDM developed by the Federal Highway Administration (FHWA) has been applied in many countries and regions with its advanced concepts and quantifiable operability, and our country has paid more attention to IHSDM less. In view of this situation, this paper introduces an interactive road safety design model that can be used in the design stage of the program, and analyzes the concept, structure and difficulties of the interactive road safety design model. At the same time, in view of the problem of poor linear consistency in the linear design of two-lane highway in our country, the design consistency model is introduced emphatically, and the practical application process is illustrated with examples. Finally, it points out that IHSDM still needs to be improved in practical application in our country, and aims to improve the safety of the highway from the point of alignment design.