Flags & Signals

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Flags & Signals

Red flag.png
Yellow flag.png
Green flag.png
Blue flag.png
White flag.png
Yellowred stripped flag.png
Flag MSA Meaning FIA Meaning
Red Immediately cease driving at racing speed and proceed slowly, without overtaking, and with maximum caution to pits or start line obeying marshal’s instructions, and being prepared to stop should the track be blocked. To stop a practise session or race. All drivers are required to slow down immediately and proceed to the pit lane (or the place foreseen by the regulations of the Event), and must be prepared to stop if necessary. Overtaking is not permitted.
Yellow Stationary: Danger, slow down sufficiently to ensure that full control of the

vehicle can be retained. No overtaking.

Waved: Great danger. Slow down considerably. Be prepared to suddenly change from the projected racing line, or take other evasive action including stopping if necessary. No overtaking.

Single waved: Reduce your speed, do not overtake and be prepared to change direction. There is a hazard beside or partly on the track.

Double waved: Reduce your speed, do not overtake and be prepared to change direction or stop. There is a hazard wholly or partly blocking the track.

Green All clear, at the end of a danger area controlled by yellow flags. Also used to signal the start of a formation lap and shown at all posts during first lap of each practice session and during the formation lap. This should be used to indicate that the track is clear and should be waved at the observation post immediately after the incident that necessitated the use of one or more yellow flags.

It may also be used, if deemed necessary by the Clerk of the Course, to signal the start of a warm-up lap or the start of a practice session.

Blue Stationary: Another competitor is following close behind.

Waved: Another competitor is trying to overtake.

This should normally be waved, as an indication to a driver that he is about to be overtaken. It has different meanings during practice and the race.

During practice: Give way to a faster car which is about to overtake you.

During the race: The flag should normally be shown to a car about to be lapped and, when shown, the driver concerned must allow the following car to pass at the earliest opportunity.

A stationary flag should be displayed to a driver leaving the pits if traffic is approaching on the track.

White A service car or slow moving car is on the circuit. The white flag will be waved to indicate the sector of the track that the slow moving vehicle is in, and held stationary whilst the vehicle is in the next sector.

This flag should be waved and is used to indicate to the driver that there is a much slower vehicle on the sector of track controlled by that flag point.

Red & Yellow Striped Stationary:

Slippery surface ahead. Waved: Slippery surface imminent.

This should be shown motionless to inform drivers that there is a deterioration of adhesion due to oil or water on the track in the area beyond the flag. This flag should be displayed, for at least 4 laps unless the surface returns to normal beforehand.

Signal Boards used on post:


Safety Car Board:

This is displayed at all posts (including the start line) when the Safety Car has been deployed onto the circuit. It is accompanied by a single WAVED Yellow Flag.



Hazard Area Board: A warning of a hazard that was not present when the practice/race commenced.


Car on Fire Board*:

Used at Castle Combe only, and not regulated within the Rule Book

Flags used by the Clerk of the Course:

Black flag.png

Black Flag:

The driver must stop at his pit within one lap of receiving the signal and report to the Clerk of the Course. A penalty of exclusion may be enforced by display of the Black flag. This flag is always displayed with a board showing the relevant competitors car number.

Blackorange flag.png

Black flag with Orange disc:

Notification of apparent mechanical failure or of a fire which might not be obvious to the driver. The car concerned must call at its pit for repairs on the next lap. This flag is always displayed with a board showing the relevant competitors car number.

Half black flag.png

Black and White Flag:

A warning, to the driver that his behaviour is suspect and that he may be Black-flagged on further reports. This flag is always displayed with a board showing the relevant competitors car number.