Raising the Speed Limit from 75 to 80 mph on Utah Rural Interstates: Effects on Vehicle Speeds and Speed Variance

This study examines vehicle speeds in Utah before and after speed limit increases in 2010 and 2013. The speed limit on several rural interstate highway road segments was increased from 75 to 80 mph. Speed data was collected and regression models were used to evaluate the effect of the increase on travel speeds, speed variance, and the probability of exceeding the speed limit. The focus was on passenger vehicles and large trucks. Based on the data the authors conclude that increasing the speed limit leads to higher travel speeds and increased speeding probability.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Appendices; Maps; References; Tables;
  • Pagination: 22p

Subject/Index Terms

Filing Info

  • Accession Number: 01619064
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 25 2016 1:52PM