TYPES OF FLAGS

Flag	Meaning
Yellow	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	Shown in conjunction with a yellow flag to indicate that the Safety Car is on track. Full course yellow flag applies.
VSC board	Shown in conjunction with a yellow flag to indicate that the Virtual Safety Car is in use. During this time, the drivers are given minimum sector times that they must stay above. Full course yellow flag applies.
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	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	A blue flag indicates that the driver in front must let faster cars behind pass.
White	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	A red flag means a session has been stopped.
Black	Driver is disqualified (usually accompanied by the driver's number).
Black with orange circle	Car is damaged and must pit immediately.
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	End of the session.