Chapter
Jul 2, 2019
Research on the Road Resistant Function Model of Urban Expressway
Authors: Guang Yuan, Yanyan Chen [email protected], Yao Lu, Xingbin Chen [email protected], and Biao ChenAuthor Affiliations
Publication: CICTP 2019
Abstract
Urban expressways play an important role in alleviating congestion and improving accessibility of urban traffic. Based on the relationship between parameters in the basic theory of traffic flow, the relation of speed and density drew support from the microwave data of an urban expressway. In addition, five functional models of speed and density are presented in this paper, including the exponential, linear, logarithm, polynomial, and power functions. However, the linear function distribution, which has the highest degree of fitness, is applied in the road resistance function model. Moreover, taking the travel time as the road impedance, a road resistant function model based on traffic flow theory is proposed. Finally, the average value of the time error, which is calculated by the acquisition time of the model to the microwave detector, is less than 10%, illustrating that the model has some practical value.
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© 2019 American Society of Civil Engineers.
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Published online: Jul 2, 2019
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Guang Yuan
Beijing Key Laboratory of Traffic Engineering, Beijing Univ. of Technology, Beijing 100124, P.R. China.
Beijing Key Laboratory of Traffic Engineering, Beijing Univ. of Technology, Beijing 100124, P.R. China. E-mail: [email protected]
Yao Lu
Beijing Key Laboratory of Traffic Engineering, Beijing Univ. of Technology, Beijing 100124, P.R. China.
Beijing General Municipal Engineering Design and Research Institute Co. Ltd., Beijing 100082, P.R. China. E-mail: [email protected]
Biao Chen
Beijing Key Laboratory of Traffic Engineering, Beijing Univ. of Technology, Beijing 100124, P.R. China.
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