At the May 2015 Type Approval Authorities Meeting (TAAM), Poland raised concerns (attached with this submission) over small M₁ vehicles being equipped with aftermarket coupling devices where the vehicle in question is not designed for towing a trailer. In effect, these vehicles are not permitted to tow trailers, but are nonetheless enabled to be equipped for such a purpose by the aftermarket devices. Therefore, Poland proposes to amend UN R55 to ensure that coupling devices are only approved for use on vehicles approved for towing trailers.

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.

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