On August 16, 2003, Janklow was involved in a fatal traffic collision while driving his car, when he failed to stop at an intersection near Trent, South Dakota. Janklow ran through a stop sign, and collided with motorcyclist Randy Scott. Scott, a 55-year-old Minnesotan, was thrown from his motorcycle and killed instantly. Janklow's vehicle traveled 300 feet beyond the point of impact and hit a sign in a field. He suffered a broken hand and bleeding on the brain. In the ensuing investigation, officials determined Janklow was driving at least 70 miles per hour in a 55 mph zone and that he ran a stop sign at the intersection where the crash occurred.