Among children, attention-deficit/hyperactivity disorder (ADHD) is associated with an increased risk for accidents, especially bicycle and pedestrian (Leibson 2001; Jensen 1988; DiScala 1998). Anywhere from 40% to 80% of children diagnosed with ADHD continue to display symptoms of the disorder into adolescence(Barkley 1990; Gittelman 1985). Adolescents with ADHD are also at an increased risk for driving-related accidents, being 2 to 4 times more likely to experience a motor vehicle accident (Barkley 1993; Barkley 1996; Cox 2000), 4 times as likely to be at fault in the accident (Barkley 1993), and over 3 times more likely to incur associated injuries as a result of the accident(Murphy 1996).