Checkered Flag - First across wins: race over
Black Flag - Rider disqualified or problem with motorcycle
Green Flag - Race start signal, race in progress when all is “go”
Red Flag - Race stopped, sometimes to be restarted
White Flag - One lap left to race
Yellow Flag - Caution, do not pass if flag is waving
Yellow and Red Striped Flag - Caution, indicates debris, fluid or hazard