Assessment of Travel Delay, Value-of-Time and Potential Safety Impacts of Truck Route Diversion using VISSIM Micro-Simulation Model

The impact of freight on the transportation system is further accentuated by the fact that trucks consume greater roadway capacity and therefore cause more significant problems including traffic congestion, delay, crashes. Assessing the actual effects of truck traffic is a growing need to support the ability to safely and efficiently move goods and people in areas where roadway expansion is not the best option. In the current practice, to the best of the authors’ knowledge, there is no methodology for real-time management of traffic, specifically on truck routes, to reduce travel duration and avoid truck travel delays due to non-recurring congestion (i.e. traffic incidents) and to estimate impacts on traffic flows, economy, and safety. The objective of this study is to develop an optimized real-time truck route diversion and to quantify its’ impacts on travel time, effects on the economy and possible effects on highway safety. In order to estimate non-recurrent congestion based travel delay by real-time truck routing simulation models via VISSIM, a significant segment of Interstate-75 in Florida with high truck percentage that has an alternative route was selected. The second-by-second traffic micro simulation model results of various scenarios indicated the potential annual value of time savings that can reach up to $1.67 million per selected corridor. Consistently, conflict points measured by the Surrogate Safety Assessment Model (SSAM) are lower when the optimized routing strategy is applied. In conclusion, the study confirms and quantifies the truck route diversion under incident induced congestion conditions have potential positive impacts on economy and safety.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Maps; References; Tables;
  • Pagination: 7p

Subject/Index Terms

Filing Info

  • Accession Number: 01697334
  • Record Type: Publication
  • Report/Paper Numbers: 19-04514
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 7 2018 9:24AM