"SAFER barriers were invented during a safety overhaul that resulted from the 2001 death of Dale Earnhardt. The walls were developed by Dean Sicking at the University of Nebraska and are currently installed in some form at every track used by NASCAR's top series."
http://sports.espn.go.com/rpm/news/s...d=2&id=3276794
http://sports.espn.go.com/rpm/news/s...d=2&id=3276794

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