RED FLAG : Usually the red flag appears only at the beginning and the end of the match. When there is an accident that may be a threat to other players' safety, it will also appear signing the end of the match.
WHITE FLAG : A waving flag means you may be delayed by a slow-speed one or one that has received a heavy accident. And a still one means that there is a slow-speed motor-cycle is in the way.
BLACK FLAG : The black flag appears with a white code1 board .It means the motor-cycle with the code on the board should have to return to the repair station before he finishes the next circle. Usually the driver receives the black flag as a punishment. He will have to stay in the repair station for ten more seconds, which is rather long for a F1 player.
BLACK FLAG AND WHITE FLAG : Warning to the player who has fouled2 but not very too seriously.
BLACK FLAG WITH A RED CIRCLE : It is used to warn a driver that there is something wrong with his motor. With the flag there is also a code-board, which is to identify the player.
BLUE FLAG : In the practice, a waving flag means the motor behind is going to pass, give way. and a still one means the motor behind you is faster than you, give way.
In formal match, a waving flag means give way, or you will be awarded a black flag. and a still one means give way for the behind one is lapping.
YELLOW FLAG WITH RED STRIPES3 : The surface of the road is very wet, be careful.
YELLOW FLAG : Still: slow down and be careful for there is an accident forward .
Waving: slow down and be ready to change your racing4 line.
Double waving: it has the same meaning as mentioned above, besides it also means get ready to sTOP for there may be a Safe Car or a red flag in you forward line.
BLACK AND WHITE FLAG : It is also called Check flag. It means the end of the match after the driver passes it, no matter you have raced enough circles.