What are the different signals which the officials may give to the competitors?
In addition to the red flag, “stopping the race”, and the chequered flag, “end of the race”, there are other flags, each having a specific meaning. The blue flag indicates “a competitor is about to overtake you”, but if the flag is waved, it orders him to let the other car overtake, on pain of a time penalty for obstruction. This order is only given to a car which is one or more laps behind the overtaker. The yellow flag indicates danger, and overtaking under yellow flag is always prohibited. Also the yellow flag may have two meanings, depending if it is stationary (“drive well within your limits”) or waved (“slow down”). The green flag indicates the end of the danger and of the ban on overtaking. The flag with vertical red and yellow stripes warns the competitors that the track is slippery (usually oil), and a black flag with an orange disc accompanied by the number of a car warns the driver that his car has a mechanical problem and that he must go to his pit. A flag with a white tria
