Green-white-checkered flag sequence: If a caution happens during the final two laps of the race, the race will continue under the yellow flag conditions – slower speed – with hopes of returning to full-speed (green flag conditions).

Two checkered flags together: Means race has entered the halfway point.Red and black flags together: Means practice or qualifying session has ended.Red flag with yellow stripe: Means pit road is closed.Yellow and red-striped flag (vertical stripes): Indicates debris on track (typically used during road races).Blue flag with yellow diagonal stripe): Alerts drivers further back in the race that the leader or pack of leaders are approaching and should move over or be courteous.

Blue flag (solid): 'Hard-to-see' problems ahead, but race continues under green flag conditions.

Black flag: Sometimes referred to as a 'consultation flag,' and is usually directed at a driver who NASCAR officials believes committed an on-track offense or cannot maintain a 'consistent and competitive speed.'.

Checkered (green) flag: Race stage has ended.

Checkered black and white flag: This flag waves as the car makes its way on the final lap, and also marks the end of the race.

White flag: Lets drivers know that there is one lap left in the race.

Drivers have to either stop on the track or sometimes come into pit road

Red flag: Marks an immediate stop to the race.

You'll likely see the pace car enter the track

Yellow flag: Caution flag, and usually slows down the race and drivers following a crash or debris.Green flag: Marks the start of a race, or the continuation of the race under normal conditions, or the re-start of a race following a yellow (caution) flag.

Download blue and yellow flag in racing