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

Effectiveness of Safety Corridor Programs

Chevron signs around a sharp roadway curve

Low-cost chevron signs around a curve

Large trees near edge of a rural highway

Large trees in right of way


Principal investigator:

Project status


Start date: 07/01/07
End date: 12/31/13




Sponsor(s): Iowa Department of Transportation

About the research


Safety Corridor Programs have been initiated and successfully implemented in several states in an effort to reduce crashes and improve safety in specific roadway sections that exhibit undesirable safety performance. CTRE at Iowa State University has teamed with the University of Missouri-Columbia to conduct a synthesis study of safety corridor programs. The research applied selected best practices identified from the synthesis study to selected routes in Iowa and analyzed the effectiveness of those measures on improving safety. Reports of the road safety audits are listed above. Road safety audits were conducted for the various highways described in those reports.