The Safety Review on Continuous Long Downgrade Sec-tion of Expressway

Haoran Dou

 Chongqing Jiaotong University, Chongqing, 400074, China

Abstract: There are many traffic accidents in the long and downhill sections of the expressway, and the problem of its operation safety is very prominent. This paper firstly introduces all kinds of domestic and foreign research on continuous long downgrade section definition standards, analyzes the influencing factors of continuous long downgrade road safety, the paper introduces the continuous downhill brake drum temperature prediction of setting safety model and the escape lane. The existing problems in the related safety research are discussed comprehensively. A safety evaluation method based on horizontal vertical and horizontal combination for real 3D design is put forward. The safety of Expressway continuous downhill section is comprehensively evaluated.

Keywords: Expressway; Long downgrade; Operation safety; Escape lane; Real 3D design