Revised proposal (superseding document GRE/2014/7) to introduce the possibility of interdependent lamps for dedicated motorcycle lamps. The proposal reflects recent amendments to Regulations Nos. 6 and 7 and meets the visibility angle requirements of Regulations Nos. 50 and 53. The concern is that the rear trunk lid commonly used for four-wheeled vehicles may be adapted for future scooter type motorcycles to secure the storage space for helmet, etc. Current lamp requirements impose design constraints that may hamper the proper development of such storage features.