UN R55 informal group proposal for:

1. An amendment for the separation of the procedures to verify towable mass from the procedure of setting and certifying performance values;
2. An amendment that adds procedures to verify towable mass for vehicle combinations that have hitherto not been accounted for in the Regulation;
3. Amendments that adds integrated fixing points for secondary couplings;
4. An amendment that clarifies the procedure to identify worst cases for certification testing;
5. Amendments that removes typos in the current Regulation.

Amendment to the proposal from the UN R55 informal group to allow the fitment of a secondary coupling and/or a brake away cable for un-braked O1 trailers or inertia braked trailers up to 3.5t which are equipped with class B coupling heads and class S drawbar eyes (38 mm, 40 mm, and others) and for the related use of integrated towing brackets.

Revised proposal superseding document GRRF/2016/31. Proposals in GRRF/2016/31 to regulate the articulation angles of couplings as installed have been removed. The informal group on UN R55 could not reach agreement on this subject. As a result, this revised proposal by the informal working group on Regulation No. 55:
a) Corrects an error in Annex 5, figures 12 and 17; and
b) Introduces an amendment concerning identification of worst cases for design assessment.

Corrections to the proposal by the informal working group on Regulation No. 55 concerning vehicle combination applications to introduce:
(a) An amendment for the separation of requirement calculation procedures from the procedure of setting and certifying performance values.
(b) An amendment that adds procedures for requirement calculation for vehicle combinations that have hitherto not been accounted for in the Regulation.

Comments concerning failure modes in the event of a separation of the main coupling between a vehicle and a towed trailer in order to enable the trailer to be guided and/or stopped automatically.

Explanation of proposals from the informal working group for corrections, restructuring, and amendments to UN R55.

Proposal to restrict component type-approval for mechanical coupling devices dedicated to category M1 vehicles to use only on such M1 vehicles as are designed to tow trailers.

Proposal by the informal working group on Regulation No. 55 to introduce:
a) Correction of an error in Annex 5, figures 12 and 17;
b) An amendment that concerns identification of worst cases for design assessment;
c) Clarifications on minimum articulation angles.

Proposal by the informal working group on Regulation No. 55 and introduces a procedure to identify allowable combinations of performance values DC and V for drawbar coupling equipment.

Proposal by the informal working group on Regulation No. 55 concerning vehicle combination applications to introduce:
(a) An amendment for the separation of requirement calculation procedures from the procedure of setting and certifying performance values.
(b) An amendment that adds procedures for requirement calculation for vehicle combinations that have hitherto not been accounted for in the Regulation.

Proposal from the UN R55 informal group to allow the fitment of a secondary coupling and/or a brake away cable for un-braked O1 trailers or inertia braked trailers up to 3.5t which are equipped with class B coupling heads and class S drawbar eyes (38 mm, 40 mm, and others) and for the related use of integrated towing brackets.

Proposal to introduce amendments on the secondary coupling and the attachment points.

UN R55 informal group working draft to introduce:

• Correction error in annex 5 figure 12 and 17
• An amendment that concerns identification of worst cases for design assessment
• Clarifications on minimum articulation angles.

Proposal to introduce amendments on the secondary coupling and the attachment points.

Proposal to introduce amendments on the secondary coupling and the attachment points.

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

Working draft amendment to UN R55 to introduce:

• An amendment that concerns a separation of requirement calculation procedures from the procedure of setting and certifying performance values.
• An amendment that adds procedures for requirement calculation for vehicle combinations that have hitherto not been accounted for in the regulation.

UN R55 informal group working draft to introduce:

• Correction error in annex 5 figure 12 and 17
• An amendment that concerns identification of worst cases for design assessment
• Clarifications on minimum articulation angles.

Working draft amendment to UN R55 to introduce:

• An amendment that concerns a separation of requirement calculation procedures from the procedure of setting and certifying performance values.
• An amendment that adds procedures for requirement calculation for vehicle combinations that have hitherto not been accounted for in the regulation.

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

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.

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.

Proposal to ensure that coupling balls do not block rear lighting and/or registration plates.

Correspondence concerning the French position on this work item.

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

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

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.

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.

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

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

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.