摘要The typical U.S. Bureau of Public Roads (BPR) volume-delay function is modified to construct the more suitable model to China's road traffic situation. Factors influencing road traffic impedance, such as the number of lanes,speed limit, intersection density, bus stop density, saturation and congestion are considered. On the basis of actual data collected from different main roads in Dalian city, traffic impedance functions for different road types (expressway, trunk road, secondary trunk road and slip road) are calculated using SPSS software. The results analysis of the traditional and improved BPR volume-delay functions is compared to certify the useful improved BPR volume-delay function.To apply road traffic impedance to the traditional four-step model,we calculate the daily conversion coefficients. These reflect the relationship between hourly traffic impedance and daily impedance function and suggest the suitable usage of daily conversion coefficients in further research.
Abstract：The typical U.S. Bureau of Public Roads (BPR) volume-delay function is modified to construct the more suitable model to China's road traffic situation. Factors influencing road traffic impedance, such as the number of lanes,speed limit, intersection density, bus stop density, saturation and congestion are considered. On the basis of actual data collected from different main roads in Dalian city, traffic impedance functions for different road types (expressway, trunk road, secondary trunk road and slip road) are calculated using SPSS software. The results analysis of the traditional and improved BPR volume-delay functions is compared to certify the useful improved BPR volume-delay function.To apply road traffic impedance to the traditional four-step model,we calculate the daily conversion coefficients. These reflect the relationship between hourly traffic impedance and daily impedance function and suggest the suitable usage of daily conversion coefficients in further research.
基金资助:Supported by the National Natural Science Foundation of China (No.50978046)
通讯作者:
HE Nan, honny_he@hotmail.com
E-mail: honny_he@hotmail.com
引用本文:
何南, 赵胜川. 城市道路阻抗函数模型研究-以大连市为例[J]. Journal of Highway and Transportation Research and Development, 2014, 8(3): 90-95.
HE Nan, ZHAO Sheng-chuan. Urban Road Traffic Impedance Function——Dalian City Case Study. Journal of Highway and Transportation Research and Development, 2014, 8(3): 90-95.
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2014, Vol. 8 
