The death of Dale Earnhardt is widely considered to be the most famous and influential on-track NASCAR fatality. NASCAR driver Adam Petty died during a practice session.
Dale Earnhardt was a famous stock car driver for NASCAR with seven Winston Cup Championships and a Daytona 500 victory under his belt. During the final lap of the 2001 Daytona 500, Earnhardt was killed after a collision with Ken Schrader. Earnhardt's death was highly influential in reforming the safety policies of NASCAR. Not even a year prior to Earnhardt's death, Adam Petty was killed in a practice session for the Busch 200 race.