| H1.12 | YELLOW WITH RED STRIPES: Informs competitors that the conditions of adhesion of the track surface have suddenly deteriorated in the area beyond the flag. This flag is most frequently used to signal that oil has been dropped on the track, but it can also be used to inform competitors of either a pool of water large enough to cause aquaplaning, or due to a local shower competitors are about to pass from a dry to slippery surface. This flag shall be displayed for four laps or until the surface returns to normal. |
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