Relative Frequency of Unsafe Driving Acts in Serious Traffic Crashes(The Summary Technical Report)

This study was conducted to determine the specific driver behaviors and unsafe driving acts (UDAs) that lead to crashes, and the situational driver and vehicle characteristics associated with these behaviors.  This study confirms other research showing driver inattention, driver impairment, unsafe vehicle speeds, and driver fatigue are important factors in serious crashes.  It also provides a unique insight into driver information failures and unsafe driving acts that lead to crashes under certain conditions.  Three color, 8.5" x 11", 28 pages.