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
17 Jan 2017 GRRF-83-06/Rev.1
Comments on the proposal of the Revision of UN R55 informal group to GRRF
Working Party Informal Mechanical Coupling Components Mechanical Couplings Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles Presentation to explain the rational behind the proposal of a new Annex 8 to the R55 introduced in the working document GRRF/2017/03.
25 Jan 2017 GRRF-83-25
Proposal for amendments to Regulation No. 55
Working Party Informal Mechanical Coupling Components Mechanical Couplings Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles Proposed addition, based on document GRRF/2016/32, to the package of amendments developed by the informal working group on UN R55 (document GRRF/2017/3). The proposal aims to make clear to Technical Services and Authorities that in cases where no values for the maximum permissible towing vehicle and trailer masses and the maximum permissible static vertical imposed load on the tow ball are declared by a vehicle manufacturer or where the declared maximum vertical value is zero, approval shall be refused.
25 Jan 2017 GRRF-83-25/Rev.1
Proposal for amendments to Regulation No. 55
Working Party Informal Mechanical Coupling Components Mechanical Couplings Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles Addition, based on document GRRF/2016/32, to the package of amendments developed by the informal working group on UN R55 (document GRRF/2017/3). The proposal aims to make clear to Technical Services and Authorities that in cases where no values for the maximum permissible towing vehicle and trailer masses and the maximum permissible static vertical imposed load on the tow device are declared by a vehicle manufacturer or where the declared maximum vertical value is zero, approval shall be refused.
06 Apr 2017 WP.29/2017/69
Proposal for Supplement 7 to the 01 series of amendments to Regulation No. 55
World Forum Working Mechanical Coupling Components Mechanical Couplings Uniform Provisions Concerning the Approval of Mechanical Coupling Components of Combinations of Vehicles Proposal for:<ol class="alpha"><li>An amendment for the separation of the procedures to verify towable mass from the procedure of setting and certifying performance values;</li><li>An amendment that adds procedures to verify towable mass for vehicle combinations that have hitherto not been accounted for in the Regulation;</li><li>Amendments that adds integrated fixing points for secondary couplings;</li><li>An amendment that clarifies the procedure to identify worst cases for certification testing;</li><li>Amendments that removes typos in the current Regulation.</li></ol><i>Please note that, under paragraph 3.4 regarding "Combination 4", the Clevis coupling formula should read "D<sub>C</sub>" rather than "D" as shown.</i>