Travel Time Reliability Analysis using Microsimulation

Travel time reliability is a crucial factor in evaluating transportation systems performance. Estimating travel time reliability is important for individual travelers as well as transportation agencies. This study developed a framework to model and estimate travel time reliability using microscopic simulation. The framework consists of three major components: scenario manager, scenario processor, and traffic simulation model. The scenario manager captures exogenous sources of travel time variability by generating multiple scenarios composed of various events (e.g. weather, incidents) based on real-world disruption data. The scenario processor translates scenarios’ attributes to inputs that can be fed into microscopic simulation model and modifies simulation input parameters values in real-time. A microsimulation model is then utilized to simulate the generated scenarios and to estimate the effects on travel time reliability. The proposed framework is applied to VISSIM model of a corridor along Interstate 15 in Salt Lake City, Utah to show the impact of weather condition on travel time reliability.

  • Supplemental Notes:
    • This paper was sponsored by TRB committee AHB40 Standing Committee on Highway Capacity and Quality of Service.
  • Corporate Authors:

    Transportation Research Board

  • Authors:
    • N, Nima Haghighi
    • Liu, Xiaoyue Cathy
    • Farnsworth, Grant
    • Burns, Kelly
  • Conference:
  • Date: 2019


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: 13p

Subject/Index Terms

Filing Info

  • Accession Number: 01698286
  • Record Type: Publication
  • Report/Paper Numbers: 19-04887
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 7 2018 9:50AM