吉林大学学报(工学版) ›› 2012, Vol. 42 ›› Issue (增刊1): 189-192.

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Prediction model of free-flow operation speed on mountain slope

XU Hong-guo1, CHEN Xiu-feng2,1, LIU San-bing1   

  1. 1. College of Transportation, Jilin University, Changchun 130022, China;
    2. College of Automotive and Transportation, Qingdao Technological University, Qingdao 266520, China
  • Received:2012-06-13 Online:2012-09-01 Published:2012-09-01

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Abstract: Based on vehicle dynamic analysis, a basic operating speed of vehicle on mountain slope was achieved by the dynamic model, which was divided into three cases based on the relationship between road resistance and dynamic vehicle factor. And then operating prediction speed was get with the basic speed correction. The operating speed of vehicles on slope sections were established by Matlab programming and Graphical user interface (GUI) visualization, with which car operating speed prediction was carried out on two-lane road mountain area. The comparison of observation speed with forecast results show that the forecast speed is consistent with observation speed. The prediction model has high accuracy and good applicability, and can reflect dynamic characteristic of vehicles.

Key words: road engineering, mountainous highway, slope section, vehicle dynamics, operating speed

CLC Number: 

  • U412.3
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