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Plain red.
The signal flag meaning the session is stopped; all competitors must slow and proceed to the pit lane.
Signals the session is stopped; all competitors must slow and proceed to the pit lane.
Contexts: Public information
Shown at every post at once rather than only where the hazard is, because a driver must receive it wherever they happen to be on the lap — the only flag in the code deployed circuit-wide.
Contexts: Public information
A plain red rectangular flag, shown simultaneously at every marshal post around the circuit.