Proposal as approved by the GRRF to introduce amendments on requirements for movable couplings, increased range of application of remote controls to couplings similar to C50-X and G50-X, possible increase of characteristic values of standard couplings and to include of further requirements on the mounting of couplings.

Proposal draft by the informal group on UN Regulation No. 55 to update this regulation with respect to:
a) Requirements on remote indication;
b) Availability of information on coupling fixing points for A50X couplings;
c) On lateral strength of drawbars; and
d) a new class definition for fully automatic drawbar couplings.

Status of the various items under discussion for the updating of UN R55 on mechanical couplings.

Observations on type-approval and “in-use” requirements under UN R55 and proposal to develop a new Annex that would provide a more coherent approach to evaluating/limiting acceptable in-use stress loads than in the current regulation.

Copy of the latest working draft of UN R55 containing amendments to introduce provisions for agricultural vehicle couplings as of 2 June 2014 (document TFAC-04-11).

Working draft prepared by the Task Force on Agricultural Couplings pursuant to the groups 4th session in February 2014.

The expert group on UN R55 submitted document GRRF/2014/14 to update the requirements for mechanical couplings, including a proposal to replace the references to IS0 7641:1983 with ISO 7641:2012. In response to issues raised within GRRF, the experts prepared a new proposal (document GRRF/2014/28). This document would supplement the proposal by providing additional information on the differences between the 1983 and 2012 versions of ISO 7641.

The expert group on UN R55 submitted document GRRF/2014/14 to update the requirements for mechanical couplings, including a proposal to replace the references to IS0 7641:1983 with ISO 7641:2012. In response to issues raised within GRRF, the experts prepared a new proposal (document GRRF/2014/28). This document would supplement the proposal by providing additional information on the differences between the 1983 and 2012 versions of ISO 7641.

Text prepared by the informal group of experts on Regulation No. 55 to introduce amendments on requirements for movable couplings, increased range of application of remote controls to couplings similar to C50-X and G50-X, possible increase of characteristic values of standard couplings and to include of further requirements on the mounting of couplings.

Status of topics being discussed within the Task Force on Agricultural Couplings (TFAC).

Requirement of a brake away cable also for drawbar-couplings

E-mail correspondence with regard to the application of provisions in New Zealand standard NZS5446:2007 for tyre scuffing forces to the approval of drawbars for lateral forces under UN R55.