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

Crash Modification Factors for Lane Departure Countermeasures in Kansas


Principal investigator:

Co-principal investigators:

Project status

In progress

Start date: 08/15/15
End date: 12/29/17


Related publication: Calibrating Highway Safety Manual for Rural Multilane Highways by Considering Fatal and Injury Crashes in Kansas Aug 2015



About the research


The majority of fatal crashes in rural areas in the Midwest are lane-departure or run-off-road crashes. According to the Kansas Strategic Highway Safety Plan, lane-departure crashes accounted for 55 percent of all crashes involving fatal and serious injuries and 22 percent of all crashes. The majority of those crashes occurred in rural areas.

With the recent instruction of the Highway Safety Manual, use of crash modification factors (CMFs) has become more popular.  CMFs are frequently used by state departments of transportation (DOTs) and other agencies since they are easy to understand and use. However, more accurate estimation of CMFs for the Midwest has not been fully accomplished. Accordingly, this study is expected to serve as a complimentary project to work at Iowa State University and to develop CMFs for lane-departure countermeasures commonly used in Kansas.