Flags signal drivers of events or conditions.Green, white, white/red, black, checkered, blue, yellow, red and red/yellow flags each have a different meaning. See each individual color for an explanation of what each flag means.
ships talk to each other with flags in an international code of signals that all nations understand. While the flag hoisted on a private yacht might say "Come over for a drink," the signals on a large ship leaving port will show if a pilot is on board and what type of cargo is carried. Signal flags are never flown at sea, except when a vessel is in distress. The ship's country of registry is flown from the stern, and her country of destination appears from the yardarms of the foremast.
Flags are used to signal drivers of events or conditions. Flags used in racing include green, white, white and red, black, checkered, blue, yellow, red and red/yellow. See each individual color for an explanation of what each flag means.
Flags are the way in which course Marshals communicate with the drivers during the race. There are ten flags that can be shown and a flag's significance may be changed depending on whether it is held sttionary or waved. In some cases a number is shown with teh flag to indicate which driver the flag is being waved at. For a description of each flag's meaning read more
The race officials will communicate with the drivers via flags. Every driver should be familiar with the flags and their meaning used at their track. Flags will be shown by the flag man.
Signal flags bearing different colors or patterns, waved or flown along a racetrack to convey various critical messages to the drivers and crews. They include: Green – Start/Restart Indicates the start of a race or qualifying run, or a restart after a caution period. Red - Stop Indicates a complete race stoppage, regardless of place on the track, due to an unsafe condition. Yellow - Caution, Slow and Hold Position indicates unsafe driving conditions on the track. Drivers must slow down, drive with caution and hold their relative position. No passing is allowed “under yellow†but drivers may close the field behind the leader.