Whilst driving your kart at speeds of up to 100mph it’s difficult to communicate with official’s trackside.                                                                                                                                                           Just imagine driving past a marshal post at 50mph with your crash helmet on and an engine less than 60cm from your ear revving at say - 14000 rpm.                                                                                 It’s also most likely that you’re not alone and have several other competitors within close proximity.                                                                                                                                                                It would be extremely difficult  to hear a marshal shout at the top of their voice any information warning you of hazards or command for attention and potentially most dangerous.                           It’s for this reason we quite simply communicate by means of flags. Flag marshals are appointed to display flag signals to competitors.                                                                                                       Penalties can be applied to any driver not complying with flag signals, so its in your own interest and safety you should familiarize yourself with them.  

Green / Yellow Chevron flag.

Used in karting only. Signifies false start resume grid positions and do another formation lap.