All forms of motorsport use a system of flags or signal lights to inform drivers of hazards during a session. While technological advances has meant that, in Formula One, many flags have been replaced by signal lights, the system of coloured flags has remained constant since the early years of racing

Flags currently in use in F1Edit

Flag Meaning
Yellow flag
Indicates a hazard on or near the track (waved yellows indicate a hazard on the track, frozen yellows indicate a hazard near the track). Double waved yellows inform drivers that marshals are working on or near to the track.
SC board
SC board and VSC board
Shown in conjunction with a yellow flag to indicate that the safety car is on track or the virtual safety car period is occurring. Full course yellow flag applies.
Yellow and Red striped flag
Yellow and Red Striped
Slippery track, due to oil, water or loose debris. Can be seen 'rocked' from side-to-side (not waved) to indicate a small animal on track.
Green flag
Normal racing conditions apply. This is usually shown following a yellow flag to indicate that the hazard has been passed. A green flag is shown at all stations for the lap following the end of a full-course yellow (or safety car). A green flag is also shown at the start of a session.
Blue flag
A blue flag indicates that the driver in front must let faster cars behind pass. If the driver ignores consecutive blue flags, a penalty is issued to the driver.
White flag
Indicates that a slow moving car is ahead. Often waved at the end of the pit lane when a car is about to leave the pits.
Red flag
A red flag means a session has been stopped.
Black flag
Driver is disqualified (usually accompanied by the driver's number).
Black Flag with Orange Circle
Black with orange circle
Car is damaged and must pit immediately (usually accompanied by the driver's number).
Black and white flag
Half black/Half white
Warns a driver for unsportsmanlike behaviour. May be followed by a black flag upon further infringement. Accompanied by the driver's number.
Chequered flag
Chequered flag
Session complete.
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