Definition
A 0.500 reaction is perfect on a sportsman tree; faster is a red light foul.
Consistent reactions win bracket races more than raw mph.
Automotive Wiki
Racing
Reaction Time
Elapsed time from the green light to the car leaving the starting line in drag racing.
Related terms
- ApexThe innermost point of a corner where the driver begins unwinding the steering w…
- Racing LineThe optimal path around a track maximizing speed through corners and on straight…
- Heel-Toe DownshiftA technique blipping the throttle while braking to match revs for smooth downshi…
- Trail BrakingCarrying brake pressure into a corner to transfer weight forward and aid rotatio…
- Grid WalkA pre-race walk along the starting grid inspecting cars, tires, and conditions.
- Pit LaneThe controlled lane along the track where cars stop for fuel, tires, and repairs…
Category: Racing · Updated August 31, 2026