WHITE WITH DIAGONAL RED CROSS (RAIN FLAG)
Indicates that rain has started to fall in the section of track where the flag is displayed.
YELLOW WITH RED STRIPES
Indicates a lack of grip in that section of the track (caused by debris, fluid, or other contamination) where the flag is displayed. When shown together with the Rain Flag (White w/Diagonal Red Cross), it indicates that the rain is also affecting surface grip in that section of the track.