Dozens of cyclists have crashed on a slice of railroad tracks in Knoxville. What lessons can be gleaned from this infrastructural pitfall? Chris Cherry was biking to a football game in Knoxville in 2014 when his wheel got lodged in the gap of a railroad crossing. Both he and his wife wound up eating face, though she got the worst of it. “She had to wear this second-skin bandage for months afterward, just because it was kind of a deep gouge,” says Cherry, an associate professor of civil engineering at UT.