Impact of Shared Autonomous Vehicles (SAVs) on Vehicle Miles Traveled (VMT) in Utah

Autonomous Vehicles (AVs) can provide benefits and flexibility leading to significant reductions in the generalized cost of travel and, potentially, more demand for travel. The combination of the AV technology with Mobility as a Service (MaaS) will create a new disruptive transportation mode – Shared Autonomous Vehicles (SAVs) that have the promise to re-define the transportation landscape by improving mobility and competing with conventional transportation modes. While it is foreseen that SAVs could potentially be on the market in a decade or two, long range transportation planning in Utah to date has not accounted for its impact. This study fills this gap by investigating the impact of SAVs on travel patterns in Utah for the 2040 horizon year. The Wasatch Front (WF) travel demand model is used to estimate the impact of SAVs on Vehicle Miles Traveled (VMT). Twelve scenarios consisting of different combinations of trip growth rates and SAV competitiveness were developed and analyzed to estimate a range for VMT increase with the introduction of SAVs. Results revealed that SAVs will increase the total number of trips by 1% to 7% across designed scenarios. Moreover, SAVs can shift mode shares away from conventional transportation modes. Finally, it is estimated that SAVs will increase daily VMT by 4% to 9% across designed scenarios due to both improved mobility of underserved populations and additional repositioning trips.


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Figures; References; Tables;
  • Pagination: 68p

Subject/Index Terms

Filing Info

  • Accession Number: 01707847
  • Record Type: Publication
  • Report/Paper Numbers: UT-19.10
  • Contract Numbers: 18-8401
  • Created Date: May 30 2019 8:16AM