19. GRSP considered GRSP-68-20, tabled by the expert from Japan to amend the current scope of the UN Regulation. He explained that the proposal was an additional amendment to an amendment adopted by GRSP and tabled by the expert from EC on behalf of the task force to align the UN Regulation to the revised General Safety Regulation of the European Union (see ECE/TRANS/WP.29/GRSP/66 para. 31). He explained that the mass limit for passenger vehicles (M1 categories) was not justified and inconsistent with the current definition of M1 vehicles (which currently has no mass limitation). The expert from EC agreed with the expert from Japan, explaining that was not the original intention to impose this mass limit. The expert from France raised a study reservation to the proposal. The expert from OICA expressed concerns to the proposal since M1 vehicles might have a high mass because derived from N2, or M2. He added that such vehicles (e.g.: motor caravans) were currently exempted as a general rule due to the higher seating reference point (R-point). He added that the proposal would include these types of vehicles and asked clarifications if the proposal would be considered a new series of amendments or a supplement. The expert from Germany agreed that full consideration should be given of motor caravans and raised a study reservation. GRSP agreed to resume discussion on this subject at its May 2021 session of GRSP and requested the secretariat to distribute GRSP-68-20 with an official symbol.