Incorporation of Travel Time Reliability in Regional Travel Model

The paper presents a practical method for incorporation of travel time reliability in a regional travel model. The discussion includes five consecutive steps. First it describes how the vehicle speed dataset for the metropolitan area of Phoenix, AZ, termed HERE, was processed and link-level volume–delay–reliability functions were estimated, and then how link-level reliability measures can be applied for network path building. The third step describes how trip origin–destination (OD) reliability measures can be constructed out of the link-level reliability measures. The fourth step involves implementation of the link-level and OD-level reliability measures in highway assignment, mode choice, and other travel models. The fifth step includes model validation and sensitivity tests. The paper addresses several long-standing issues associated with incorporation of travel time reliability in operational travel models in practice. These issues include construction of OD reliability measures with the recognition that the core link-level reliability measures such as standard deviation or variance are not additive in a general case, accounting for a partial correlation between travel time distributions for different links, and incorporation of travel time reliability in a standard static assignment.

• Record URL:
  https://doi.org/10.1177/0361198118787090
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Authors:
  • Gupta, Surabhi
  • Vovsha, Peter
  • Dutta, Arup
  • Livshits, Vladimir
  • Zhang, Wang
  • Zhu, Haidong
• Publication Date: 2018-12

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 46-57
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Volume: 2672
  • Issue Number: 49
  • Publisher: Sage Publications, Incorporated
  • ISSN: 0361-1981
  • EISSN: 2169-4052
  • Serial URL: http://journals.sagepub.com/home/trr

Subject/Index Terms

• TRT Terms: Data analysis; Regional transportation; Statistical analysis; Traffic congestion; Traffic volume; Travel demand; Travel time
• Identifier Terms: Maricopa Association of Governments; Volume-Delay-Reliability Function
• Geographic Terms: Phoenix (Arizona)
• Subject Areas: Data and Information Technology; Highways; Planning and Forecasting;

Filing Info

• Accession Number: 01663002
• Record Type: Publication
• Report/Paper Numbers: 18-03028
• Files: TRIS, TRB, ATRI
• Created Date: Mar 20 2018 5:04PM