Track Limits

The edge of the track is defined by the white lines, and a driver must keep at least part of the car within them. Putting all four wheels beyond the line is exceeding track limits — and at corners where running wide is faster, it is policed strictly.

• In qualifying, a lap with a track-limits breach is simply deleted.
• In the race, repeated breaches earn a warning (often the black-and-white flag), then a time penalty.
• At the worst-offending corners, sensors and cameras flag breaches automatically.

Enforcement is usually focused on just a few corners per circuit — the handful where going wide actually gains time — and the limit is the same for everyone, applied consistently lap after lap. In the race the breaches are tallied: a driver gets a few “free” warnings, but keep running wide and the escalation to a five-second penalty is automatic, no judgement call required.

Increasingly the sport leans on the track itself to do the policing. Detection loops buried at the corner exit and dedicated cameras flag every breach automatically, taking the guesswork out of it, while physical deterrents — a strip of gravel, a rough kerb, or a raised “sausage” kerb — make running wide costly or uncomfortable enough that drivers simply stop doing it. Where the asphalt run-off is wide and flat, though, only the rule can hold the line.