Flags currently in use in F1

https://www.youtube.com/watch?v=tlJai8hlRkc&t=66s



Flag Meaning
Yellow The meaning can vary depending on the way it is waved and how many are waved.

• Single waved yellow flag means overtaking prohibited due to danger off the track. A speed reduction is required.
• Double waved yellow flag means overtaking prohibited due to danger on the track. A speed reduction is required.

SC board Safety Car is put out on track when an incident blocks the track or leaves a lot of debris. Drivers stay behind the SC until the marshals have cleared up. VSC (Virtual Safety Car) is for more minor incidents, where no safety car is on track, but drivers must slow down to a required Delta. This board is always accompanied by a single waving yellow 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 Normal racing conditions apply. This is always shown following a yellow flag to indicate that the hazard has been passed.