CTRE is an Iowa State University center, administered by the Institute for Transportation.

Address: 2711 S. Loop Drive, Suite 4700, Ames, IA 50010-8664

Phone: 515-294-8103
FAX: 515-294-0467

Website: www.ctre.iastate.edu/

Iowa State University--Becoming the Best

Evaluation of Speed Limit Policy Impacts on Iowa Highways


Principal investigators:

Co-principal investigators:

Project status

In progress

Start date: 07/01/17
End date: 12/31/18


Sponsor(s): Iowa Department of Transportation

About the research


This research involves a detailed study of speed-related trends on rural Iowa interstates, as well as on the high-speed non-freeway system including two-lane and multilane highways. This study will specifically examine current trends in travel speeds, as well as traffic crashes, injuries, and fatalities over time. Finally, the economic impacts associated with increasing speed limits on rural interstates will be assessed.