Interpretation question on the provision “With the exception of retro-reflectors, a lamp even bearing an approval mark is deemed not to be present when it cannot be made to operate by the sole installation of a light source and/or a fuse.”
17. The expert from Norway requested a guidance on the interpretation of paragraph 5.22. of UN Regulation No. 48 on lamps that are deemed not to be present (GRE-90-14). The Chair of IWG SLR recalled their status report and list of future activities (GRE-90-08) which included clarification on this and related issues in UN Regulations Nos. 48, 53 and 74, based on the principle “prohibited if not allowed” for the lamp installation. Some experts pointed out that the main purpose of paragraph 5.22. was not to leave holes in the car body in case a specific lamp (e.g. left/right rear fog lamp) was not used, for instance, for the right/left hand traffic.