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8. (c) Clarifications

GRVA agreed to consider a proposal tabled by the experts from the European Association of Automotive Suppliers (CLEPA) and International Organization of Motor Vehicle Manufacturers (OICA), aimed at enabling the use of a park lock type system as an alternative to a friction type parking braking system to fulfil the static requirements of UN Regulations Nos. 13 and 13-H.

GRVA/2025/14 | UN R13-H: Proposal for amendments
GRVA/2025/13 | UN R13: Proposal for amendments
GRVA-21-10/Rev.1 | Park lock device approval

GRVA agreed to resume consideration of a proposal for amendments to UN Regulation No. 13 aimed to insert requirements for the approval of e-trailers, tabled by the experts from CLEPA, the International Association of the Body and Trailer Building Industry (CLCCR) and OICA.

GRVA/2025/15 | UN R13: Proposal for amendments
GRVA-21-12 | UN R13: Proposal to amend document GRVA/2025/15
GRVA-21-41 | UN R13 amendment for e-axles and self-propelled trailers

GRVA agreed to resume consideration of a proposal tabled by the expert from the European Association of Automotive Suppliers (CLEPA) to resolve the problem of decreasing trailer brake performance caused by brake pads and linings “falling asleep”.

GRVA/2025/16 | UN R13: Proposal for amendments
GRVA-21-59 | UN R13: Proposal to amend diagrams in document GRVA/2025/16

GRVA may wish to review amendments to UN Regulations Nos. 13, 13-H, 139 or 140, if available.

GRVA-21-49 | UN R13: Proposal for amendments to the 14 series of amendments
GRVA-21-52 | UN R13 and R13-H: Comments on documents GRVA/2025/18 and GRVA/2025/19
GRVA-21-50 | UN R13: Proposal for amendments to the 14 series of amendments