Five red lights come on one by one. When they all go out, react — tap or hit space. Jump the start and you take a penalty. 5 starts. Are you as quick as an F1 driver?
An F1-style race start reaction test: five red lights, then lights out — react faster than a Formula 1 driver. Only on ReactionLab.
Five red lights switch on one by one, then all go out after a random hold. React the instant they go dark — exactly like a Formula 1 race start. Five starts, your average counts.
F1 drivers typically react in roughly 0.2 seconds. Under 250 ms is very fast for a browser test; most people land between 250 and 350 ms.
Pressing before the lights go out is a jump start: the start is replayed and you take a score penalty, just like a real grid penalty.