Discussion on Influencing Factors of Free-flow Travel Time in Road Traffic Impedance Function

Road traffic impedance is an important part of traffic assignment and has a direct impact on urban transportation planning, especially on the optimization of the urban road network. The Bureau of Public Roads (BPR) function has been the classical traffic impedance since the 1960s, which pays more attention to the link level. This paper aims to construct an improved BPR function based on the influencing factors of road traffic impedance, such as the density of intersections, the density of bus stops, non-motor vehicles and saturation. These factors can reflect the difference between road and link. The real data collection from different roads in Dalian are used to calculate the road traffic impedance function by the SPSS software. The results show that the density of intersections, the density of bus stops and saturation have positive effects on unit travel time in Dalian roads. These results not only point out the necessary influencing factors, but also validate the correctness of the proposed impedance function. In summary, this function has a simple structure and high flexibility so that it is expected to be transplanted to other cities.

• Record URL:
  • https://doi.org/10.1016/j.sbspro.2013.08.013
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S1877042813021393
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/18770428
• Supplemental Notes:
  • © 2013 Nan He and Shengchuan Zhao
• Authors:
  • He, Nan
  • Zhao, Shengchuan
• Conference:
  • 13th COTA International Conference of Transportation Professionals (CICTP 2013)
  • Location: Shenzhen , China
  • Date: 2013-8-13 to 2013-8-16
• Publication Date: 2013-11-6

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: pp 90-97
• Serial:
  • Procedia - Social and Behavioral Sciences
  • Volume: 96
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 1877-0428
  • Serial URL: http://www.sciencedirect.com/science/journal/18770428/53
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Bus stops; Intersections; Saturation flow; Traffic flow; Travel time; Urban travel
• Uncontrolled Terms: Road networks; Travel impedance
• Geographic Terms: Dalian (China)
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 01503404
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 7 2014 4:41PM