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rear fog light
signal light carried on a vehicle to indicate its location when it is viewed from the back in conditions of poor visibility, in particular in fog conditions, and that is supplementary to a rear position light
Note 1 to entry: This entry was numbered 845-11-76 in IEC 60050-845:1987.
Note 2 to entry: This entry was numbered 17-1039 in CIE S 017:2011.