Proposal for editorial improvements, including to update a cross-reference in paragraph 3.4. to read “3.1.2” pursuant to the earlier division of paragraph 3.1 into separate paragraphs 3.1.1. and 3.1.2.

Proposal to correct references to Regulations Nos. 30 and 54 following renumbering of paragraphs in these regulations.

Discussion of run-flat tyres and extended mobility tyres (EMT) in support of a general proposal to establish approval procedures for EMT under UN R30 and include EMT as “emergency mobility equipment” under UN R64. The proposal makes reference to recent activity on ISO 16992 regarding EMT test protocols.

Introductory statement to document GRRF-86-04 proposing amendments in order to provide a legal approval framework for extended mobility tyres under UN R30 and their recognition as “emergency mobility equipment” under UN R64.

Proposal to clarify the scope requirements for a UN Regulation, to specify that national authorities may apply additional requirements provided they are not covered by one or more applicable UN Regulations, and to delete the clause allowing Contracting Parties to refuse to accept type approvals granted under a preceding series of amendments after the entry into force of the latest series of amendments to a UN Regulation.

A field study on tyre inflation pressures and TPMS fitment on passenger cars carried out in Sweden, Germany and Spain between November 2016 and August 2017. The study is the first of its kind worldwide covering all types of TPMS and taking into account the specific tyre inflation pressure recommendations for cold tyres as well as the actual tyre temperatures at the time of measurement.

Proposal to correct a mistake in Supplement 17 to UN R75 (adopted document WP.29/2017/8). Annex 7, Paragraph 1.2., Footnote 1 should refer to UN R54, not UN R106.

Correction of a cross-reference error in the original documents GRRF/2018/5 and GRRF/2018/11.

Proposal to amend footnotes in Annex 5, Part II, Table B in order to clarify categories of use.

Pursuant to Supplement 21 to UN R54 replacing PSI with kPa to indicate tyre inflation pressures, UN R109 requires updating. This proposal would allow both markings under UN R109 because the life cycle of the carcasses spans several years.

TyreGTR informal group presentation of Amendment 2 to the GTR on tires.

Marked up text of the tyre GTR Amendment 1 with improvements to the text (Phase 2A in the development of the regulation).

Proposal to add a paragraph to define the purpose of the “SS” marking introduce by the amendments to UN R106 on agricultural and related off-road tyres.

Proposal as approved by GRRF to add tyre sizes and tyre classification codes common in the United States and standardised by the Tire and Rim Association, but needed under UN Regulation No. 106 in order to permit their type approval in conformity with Regulation EU 167/2013 for imported tyres. The proposal adds kPa marking specifications for use in measurements and tyre testing. The proposal further includes changes to the text and addition of tyre size designations to Annex 5 and Annex 7:

1. Paragraph 2.33.2 deleted since new tables for IF and VF were added to Annex 7
2. Paras 3.2., 3.2.2. and 5.4. modified because “tyres submitted for approval” cannot bear an approval mark until approved and the “only” as it is written can be misunderstood. Para. 3.2.2. was aligned to the wording in other UN Regulations. Reference to para. 3.3 in paragraph 5.4. is deleted because paragraph 3.3 does not refer to specific markings
3. Para 6.1.2. amended to align the wording to the headers in Annex 5 and to correct the reference to the footnote
4. Para 6.2.1. amended to restore the proper references after renumbering resulting from the latest Supplements
5. The amendment of Annex 5, Table 5 adds the value for the overall diameter (D) in column (*) that applies to tyres marked with classification code “I-3”
6. Annex 5, Table 6, Note 1 amended because most of the tyre sizes listed in the table, especially those identified by the “classification code I‐3” (i.e. Traction tread), are currently available in both versions: ‘implement’ to be used on agricultural machinery and ‘IND’ to be used on construction vehicles. The two types of tyres have the same type of size designation and the same dimensions. Therefore some manufacturers identify those tyres with the suffix ‘IND’ rather than with the suffix ‘IMP’ thus applying the variation of load capacity with speed as published in Annex 7 Part E. The reason for this proposal is to avoid a duplication of tables with a new table only replacing the suffix IMP with the suffix IND.
7. The addition of the footnote to Annex 5, Table 7 answers the request by GRRF to introduce appropriate formulae in the Regulation instead of continuously updating Annex 5.
8. References in Annex 7 corrected pursuant to the renumbering following the introduction of three new paragraphs in Supplement 15 approved during the 172nd session of WP.29.
9. Annex 7, Part A amended to conform with Tire and Rim Association specifications for code designated diagonal tyres with speed symbol A8.

Proposal as approved by the GRRF to introduce formulae for tyre sizes in Annex 5, Table B, add sizes in Annex 5, Part II, Tables C and E for old sizes that do not follow the guidelines/formulae applicable for high flotation tyres, amends footnotes in Annex 5, Part II, Table B in order to clarify categories of use, clarify tyre width tolerances, correct paragraph numbering and references, align the text editorially with UN R30 and to make other editorial improvements,

Document WP.29/343 is the “Status of the 1958 Agreement” which provides the current listing of UN Regulations, Contracting Parties applying each regulation, technical services authorized to conduct testing under each regulation, and so on. Revision 3 of the 1958 Agreement and UN R0 on International Whole Vehicle Type Approvals change the status document because Contracting Parties may accept earlier versions of UN Regulations and IWVTA approvals may be partial or universal based upon acceptance of specific regulations and/or versions. This submission from the WP.29 Secretariat provides guidance on how these changes will be reflected under the status document.