F1 Reaction Test

In Formula 1 the race starts when the red start lights go out. The lights come on one at a time, then go out together after a variable delay, so drivers can't predict the exact moment. Moving before lights out is a jump start.

This F1 reaction test recreates that sequence. Because the hold after the fifth light is random, you have to react rather than anticipate. As in all our tests, responses faster than 100 ms count as anticipation and aren't scored.

How F1 start lights work

• A row of five red lights above the grid comes on one light after another.
• When all five are lit, there is a short pause of varying length, then every light goes out at once.
• Lights out is the signal to go. Drivers who move before it are penalised for a jump start.

This test follows the same pattern: one light per second, then a random hold of 0.2 to 3 seconds before lights out, so the moment can't be timed in advance.

How it differs from a real race start

• Drivers react with clutch and throttle inside a car; you react with a mouse, finger or key.
• Your screen, input device and browser add latency that a real start system doesn't have.
• It's a fun benchmark for start-style reactions, not a measure of driving ability.

For context, McLaren's performance coaches put an F1 driver's race-start reaction, including the action that follows, at roughly 0.2 to 0.3 seconds (McLaren, “Lights out and away we go?”, 2020).

Want to compare? Take the classic reaction time test or the visual reaction test on the same device, and read what is a good reaction time. For how drivers train their starts, see F1 driver reaction time.