rear position light
signal light carried on a vehicle to indicate its location when it is viewed from the back
Note 1 to entry: A rear position light can also, particularly if paired with an identical light, provide an indication of the width of the vehicle.
Note 2 to entry: This entry was numbered 845-11-74 in IEC 60050-845:1987.
Note 3 to entry: This entry was numbered 17-1040 and 17-1298 in CIE S 017:2011.