Proposals prepared by the ASEP II informal working group to clarify UN R41 and introduce provisions to improve testing to be more representative of real-world operation by expanding the scope of tests.

Proposal for alternative language regarding markings to avoid use of the term “moulded” which could be interpreted as a technical design restriction.

Per the transitional provisions of Supplement 3 to the 04 series of amendments, from 20 January 2021, the specifications for the test site reproduced in Annex 4 will be replaced by the provisions of ISO 10844:2014. Therefore, this proposal aims to align the 04 series of amendments with ISO 10844:2014, replacing provisions from ISO 10844:1998 (and proposing a clearer image for Figure 1).

The text has been prepared by the experts of the Task Force on Tyre Pressure Monitoring System and Tyre Installation (TF TPMSTI) in order to align with the provisions of European Union Regulation 2019/2144 and to introduce the tyre installation requirements for all vehicle categories

Text prepared by the experts of TF TPMSTI in order to align with the provisions of European Union Regulation 2019/2144 and to introduce the TPMS requirements for all vehicle categories

Proposal to expand and improve the current definition of a radial structure while ensuring the radial tyres key features (mechanical decoupling between the tread and the bead).

Proposal to align the provisions for retreaded tyres with the proposals of France for UN Regulation No. 30 and of the European Tyre and Rim Technical Organization (ETRTO) for UN Regulation No. 117.

Proposal to align the provisions for retreaded tyres with the proposals of the European Tyre and Rim Technical Organization (ETRTO) for UN Regulations Nos. 54 and 117.

Proposal to amend the extended mobility tyre (EMT) symbol following the detection of dimensional inconsistencies within the International Organization for Standardization Working Group (ISO) TC31/SC3/WG19, where the dimension “0,33h” was judged wrong and constituting an unnecessary over constraint and to amend the inflation value to be used for the tyre conditioning when assessing the “flat tyre running mode” of “run flat tyres” and of “extended mobility tyres”.

Proposal prepared by the Task Force on Studded Tyres (TF ST) to establish a new UN Regulation on uniform provisions concerning the approval of studded tyres with regard to their snow performance (distinguished from studdable tyres regulated by UN Regulation No. 117).

Proposal prepared by the experts on communication interfaces of the Task Force on Tyre Pressure Monitoring System and Tyre Installation (TF TPMSTI) to update the requirements on the communication interfaces between towing and towed vehicles.

Proposal to require wheel attachments with three or more fixing components (nuts or studs) in the scope of the Regulation, to restrict the difference in pitch circle diameter (PCD) of a wheel type comprised of more than two versions, to carry out additional rotating bending tests on each version with a PCD difference to a tested version of more than 6.5 mm, and to establish specifications for comparison of replica wheels with the minimum level of the vehicle manufacturer´s replacement wheels.