Originally Posted by
asgelle
USAC rules are quite clear. Finish is judged by front edge of front tire. What they implies for chips should be obvious.
1M1. Judging. The finish of a race shall be judged when the front tire first penetrates the imaginary vertical plane passing through the leading edge of the finish line.
From Chief Referee on a hill climb race (response today):
Me: I wanted to clarify this is a road race, so first over the line is the winner even if 2nd over line has a lower chip time (so maybe they started behind).
Chief Referee:[winner is] by your chip time