What Do the Different Colored Flags Used in Auto Racing Mean and How Many Flags Are There?

Seven flags are used as signals to drivers in car races.

A green flag starts the race; a yellow flag means “don’t pass”.

A red flag means “stop for an emergency”.

A black flag signals a rule infraction.

A white flag indicates that the leaders are starting the last lap.

A blue flag with a diagonal stripe tells slower cars to move aside.

And finally the checkered flag means the race is over.