UN Regulation No. 55: Mechanical Coupling Components

Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles

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Date Reference Description Status
08 Jan 2019 GRSG/2019/6
UN R55: Proposal for Supplement 8 to the 01 series of amendments
Working Party Working Mechanical Coupling Components Mechanical Couplings Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles Proposal to add the text, “In such a case, the motor-vehicle’s user instructions (e.g. owner’s manual, vehicle handbook) shall clearly specify that the removable or repositionable mechanical coupling device shall always be removed or repositioned when it is not in use.”
11 Jan 2019 GRSG/2019/12
UN R55: Proposal for Supplement 8 to the 01 series of amendments
Working Party Working Mechanical Coupling Components Mechanical Couplings Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles Proposal to improve the communication document. The current wording of item 2 in Annex 1 is redundant with item 3 and not aligned with similar texts (UN R58 or R73). The key point of item 2 is to identify the type of device or component approved.
01 Apr 2019 GRSG-116-33
UN R55: Examples of mechanical coupling devices of class A
Working Party Informal Mechanical Coupling Components Mechanical Couplings Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles
22 Aug 2019 WP.29/2019/96
UN R55: Proposal for Supplement 8 to the 01 series of amendments
World Forum Working Mechanical Coupling Components Mechanical Couplings Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles Proposal to improve the communication document. The current wording of item 2 in Annex 1 is redundant with item 3 and not aligned with similar texts (UN R58 or R73). The key point of item 2 is to identify the type of device or component approved.
03 Oct 2019 GRSG-117-06
UN R55: Proposal for amendments
Working Party Informal Mechanical Coupling Components Mechanical Couplings Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles Proposal to clarify that the term "special joint" does not include flexible components supporting coupling articulation (as is pertinent to Class C50 couplings).
03 Oct 2019 GRSG-117-09
UN R55: Proposal for amendment
Working Party Informal Mechanical Coupling Components Mechanical Couplings Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles Proposal to add a line for restrictions on the use of Class T couplings to the type-approval communication form.
04 Oct 2019 GRSG-117-25
UN R55: Proposal for the 02 series of amendments
Working Party Informal Mechanical Coupling Components Mechanical Couplings Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles Revised text with transitional provisions for the proposal (GRSG/2019/6) to specify that "the motor-vehicle’s user instructions (e.g. owner’s manual, vehicle handbook) shall clearly specify that the removable or repositionable mechanical coupling device shall always be removed or repositioned when it is not in use.” The purpose is to comply with an EU General Safety Regulation provision that prohibits couplings from obscuring rear lighting components or registration plates.
07 Jan 2019 MVC-07-03
Modular vehicle combinations: Trailer coupling drawings
Informal Group Informal Heavy-Duty Vehicle Braking Heavy-Duty Braking Uniform Provisions Concerning the Approval of Vehicles of Categories M, N and O with regard to Braking Mechanical Coupling Components Mechanical Couplings Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles
09 Dec 2019 MVC-07-04
Actively articulated dolly axle
Informal Group Informal Heavy-Duty Vehicle Braking Heavy-Duty Braking Uniform Provisions Concerning the Approval of Vehicles of Categories M, N and O with regard to Braking Mechanical Coupling Components Mechanical Couplings Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles
09 Dec 2019 MVC-07-05
MVC informal group: Notes from the 6 December 2019 teleconference
Informal Group Informal Heavy-Duty Vehicle Braking Heavy-Duty Braking Uniform Provisions Concerning the Approval of Vehicles of Categories M, N and O with regard to Braking Mechanical Coupling Components Mechanical Couplings Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles
19 Dec 2019 WP.29/2020/27
UN R55: Proposal for the 02 series of amendments
World Forum Working Mechanical Coupling Components Mechanical Couplings Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles Proposal to specify that "the motor-vehicle’s user instructions (e.g. owner’s manual, vehicle handbook) shall clearly specify that the removable or repositionable mechanical coupling device shall always be removed or repositioned when it is not in use.” The purpose is to comply with an EU General Safety Regulation provision that prohibits couplings from obscuring rear lighting components or registration plates.