In order to make the alignment index of the expressway coordinate with the vehicle driving characteristics, this paper puts forward the concept of expressway alignment coordination evaluation based on the operation speed, which can be used to recognize dangerous sections which are sensitive to speed changes. Based on the domestic and foreign research, and according to the current highway project safety evaluation standard and other relevant regulations, the typical road sections of the expressway are divided by their alignment design index, meanwhile the operating speed prediction model of each typical section is put forward. On basis of this, a method of evaluating the alignment coordination is proposed by means of operating speed coordination and design speed coordination. Finally, according to the design data of Suiyan expressway, the operating speeds of K0 to K21 are predicted, and the alignment coordination of the expressway is evaluated to find out dangerous sections and put forward safety adjustment schemes.

CICTP