Text prepared by the International Organization of Motor Vehicle Manufacturers (OICA) in order to introduce the concept of “revision of approvals” into regulations under GRRF responsibility.

Draft terms of reference and rules of procedure for the informal working group established to overhaul the UN Regulation on mechanical couplings presented by the informal group chairman for GRRF approval.

Annex to the draft terms of reference providing a list of possible areas for amendments to the regulation on mechanical couplings.

Text prepared by the UN R55 informal group: Requirements on movable ball couplings, increased range of application of remote controls to couplings similar to C50-X and G50-X; couplings amendments; enable increased standard coupling characteristic values; and additional requirements for mountings.