Here are the common Flags of racing and their meanings
Start the Race
Move over, Faster
Car over taking you
Caution, Can
be for an accident, or debris on the racing surface, racers fall in line
and drive slowly around track
Race stopped,
can be for severe accident, all cars stop immediately on the racing surface
Oil on the
racing surface
Pull into the
pits for Track consultation
one lap to go
End of the race