David Cline, the paramedic who was killed when the private ambulance he was driving slammed into the back of a TDOT roadside help truck on Interstate 65 on October 22, 2009, had a history of medical problems, including narcolepsy and epilepsy. Investigators are unsure why Cline left the highway but believe that the he suffered a "seizure or some type of medical condition that [incapacitated] him and led to the fatal crash, according to the final report released by Metro Nashville Police Department on December 28, 2009. The story was reported in The City Paper.
The article reports that "after performing a toxicology examination, police determined Cline had an elevated level of amphetamines in his bloodstream from his prescribed medication for narcolepsy, Adderall. The same report did not find indications his prescribed epilepsy medication, Depakote, was in his system." The article also reports that
Cline did have previous incidents involving seizures and car crashes. On Christmas Day 1999, Cline ran off the road and struck a utility pole after he had a seizure, and following the incident, his driver’s license was suspended. His credentials were reinstated in March of 2000. He suffered another seizure while working his day job as a Franklin firefighter, "three or four years prior" to the deadly crash.