F1 Reaction Test
Five red lights on. Then, after a random pause, they go out, and you go. This is the exact start sequence an F1 driver faces, and a good launch reaction is around 200 ms. Click or press space the moment the lights vanish. Go early and it is a jump start.
Reacting to lights out
The F1 start is the most-watched reaction test on Earth. Twenty drivers stare at the same gantry, five red lights glow one by one, and then (at a moment nobody can predict) they vanish. The fastest hands off the line win the run to turn one, and the gap between a great launch and an average one is often less than a tenth of a second.
What makes it hard is the random hold. Because the lights can go out anywhere from a fifth of a second to three full seconds after the last one lights up, you cannot time it. You have to genuinely react. Try to guess and you either jump the start or, more often, freeze and lose more time than you saved. The drivers who are best at this are not the ones who gamble. They are the ones who stay relaxed and let the reflex fire.
How to get a real number
- Don't pre-load the click. Tensing your finger early feels fast but leads straight to jump starts.
- Watch the whole gantry, not one light. Soft focus across all five catches the change quicker.
- Run it five times. We take the median, so one fluke launch won't flatter or wreck your score.
Want to see how your launch compares to a pure visual reflex? Take the classic reaction time test too. The F1 version usually reads a touch slower because you are processing a more complex scene before you move.