Definitions for "Speed Trap"
The final 66-feet before the finish line that is used to measure miles-per-hour. There are speed traps at both the eighth-mile and quarter mile marks.
An area at the end of a drag strip where electric eyes are used to measure a vehicle's speed at the end of its run.
The area at the end of a drag strip where electronic sensors measure the speed of the drag racer. Speed traps are also set up at the end of long straights just before the braking point to provide a good approximation of the maximum speed attained in Champ tracks.