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

Investigating Factors Contributing to Large Truck Lane Departure Crashes Using the Federal Motor Carrier Safety Administration's Large Truck Crash Causation Study (LTCCS) Database

Semi tractor trailer jacknifed in a snowy ditch

Large truck lane departure crash in winter conditions

Researcher(s)

Principal investigators:

Co-principal investigators:

Student researchers:

Project status

Completed

Start date: 07/10/07
End date: 01/31/09

Publications

Report: Investigating Factors Contributing to Large Truck Lane Departure Crashes Using the Federal Motor Carrier Safety Administration's Large Truck Crash Causation Study (LTCCS) Database (1.8 mb pdf) January 2009

Tech transfer summary: Factors Contributing to Large Truck Lane Departure Crashes (103 kb pdf) Jan 2009

Sponsor(s)/partner(s)

Sponsor(s): USDOT Volpe National Transportation Systems Center

About the research

Abstract: Lane departure crashes account for a significant number of motor vehicle crashes and fatalities. However, information specific to large truck lane departures is not well documented. This project evaluated lane departure crashes and the related independent variables and attempted to derive causal relationships that can be used to identify preventative measures for reducing large truck lane departure crashes.

Data from the Federal Motor Carrier Safety Association?s Large Truck Crash Causation Study (LTCCS) Database were evaluated to determine both the common causes and the circumstances leading to lane departure crashes. Causes and circumstances may include driver, vehicle, roadway, and environmental factors. Simple statistics, a simple odds ratio, and logistic regression were used to evaluate the crashes, and driver, vehicle, environmental, and roadway factors contributing to large truck lane departure crashes were identified.