Working draft proposal of the R55 informal group to introduce amendments concerning:
(a) Identification of worst cases for design assessment, and
(b) Procedures for COP.

Information on TAAM discussions concerning cases where the sum of the mass of the towing vehicle (M) [T] and the mass of the towed vehicle (TM) [R or C] is higher than the maximum combination mass (MC) set for the towing vehicle.

Working draft proposal of the UN R55 informal group for a uniform procedure to rate couplings for extreme heavy transport configurations based upon a speed-reduction method. The intent is to address conditions where there are no coupling products with appropriate certified performance values.

Proposal to introduce provisions for minimum articulation of couplings in order to prevent damage from maneuvers that exceed coupling capacities.

Draft proposal of the informal group on UN Regulation No. 55 to modify Figure 17 – annex 5 – Dimensions of spring-mounted steering wedges.

Proposal for a higher vertical load for drawbar couplings with a jaw that pivots about the horizontal transverse axis.

Draft text to introduce provisions for minimum articulation of couplings in order to prevent damage from maneuvers that exceed coupling capacities.

Correspondence concerning the French position on this work item.

Copy of the proposal by Poland to amend UN R55 to ensure that coupling devices are only approved for use on vehicles approved for towing trailers.

Draft proposal to introduce amendments on a procedure to dimension coupling equipment for heavy transports through speed reduction.

Draft proposal to introduce amendments on a procedure to dimension coupling equipment for heavy transports through speed reduction.

Proposal to introduce a procedure to identify allowable combinations of performance values DC and V for drawbar coupling equipment.