Abstract:
Run-Off-Road (ROR) crash occurs when a vehicle leave the lane resulting in a collision. ROR crashes
in recent years have become a major cause of serious injuries and fatalities. Data from Kansas Crash
and Analysis Reporting System (KCARS) database during the period 2007 to 2011 were used in this
study to examine the ROR crashes. Identification of various characteristics such as environment,
roadway, driver, and vehicle as well as factors contributing to rural ROR and urban ROR crashes is
important because potential countermeasures can be developed to improve roadside safety. It was
found that avoidance/evasive or slow; ill, falling asleep or fatigued; or animal at the road is more
common on rural roadways than urban roadways.
