Extreme danger. Stop racing. Come to a controlled stop as quickly as possible to the edge of the track and within driver’s sight of the marshal post. Await instruction from the corner official.

Displayed to a car, with audible car number indication, for an infraction or safety concern. Driver is to report to pit road immediately and safely.

Slow down, no passing. Racing may commence after passing an incident and the next manned station is in view with no flag displayed.

Notifies the race or practice session is finished. Cool your car down and return to the pits at the next opportunity.

The appearance of this flag signals a clear course and indicates the immediate start or restart of a race.