Proposal to introduce measures to reduce variability across assessments and to bring the latest ISO 10844 standard test surface into the Regulation. The proposal includes editorial corrections and clarifications based on the 03 series of amendments to UN R51 up to Supplement 7 (GRBP/2023/12) subject to review and approval during the January 2023 GRBP session.

Proposal to bring the latest ISO 10844 standard test surface into the Regulation.

Proposal to address the definition of the radial structure, the definition of snow tyres, the requirements for special use tyres of class C1, the addition of an optional prefix for extra load tyres, a clarification of the description of the load/speed test for run flat tyres and extended mobility tyres (EMT) and editorial corrections.

Proposal to introduce provisions to allow the type approval of special use tyres that fulfil the requirements for snow performance as laid out in Annex 7, to bring the latest ISO 10844 standard test surface into the Regulation, and to make editorial corrections.

Proposal to introduce provisions to allow type approval of special use tyres that fulfil the requirements for snow performance as laid out in Annex 7, to improve precision of the test procedures for measuring the wet adhesion of tyres in a worn state by using a moulded SRTT16 reference tyre (instead of a buffed tyre), to introduce new transitional provisions related to this change, to extend corrections already made to the 02 series to the 03 series and make additional editorial corrections, and to define the range for tyre inflation vis-à-vis rim size to reduce uncertainties in measuring tread depth. The proposal introduces the tyre reference F3611-22 per document GRBP/2023/2 submitted to the January 2023 session of GRBP.

Proposal to introduce provisions for C1 tyre ice-grip performance.

Proposal to revise the limits for rolling resistance and wet grip, to address tyres for vintage vehicles, to revise the definition for special-use C1 tyres, and to set the wet grip index threshold at 0.80 for class C1 tyres with a nominal aspect ratio equal to or less than 40, a section width equal to or higher than 235 mm and suitable for speeds equal to or greater than 300 km/h and for class C1 all terrain and special use tyres. The proposal also introduces the k_worn factor in a new para. 3 in Annex 9 to address wet grip of C2 and C3 tyres in a worn state (see GRBP-75-26-Rev.1 for concept), provisions to allow the type approval of special use tyres that fulfil the requirements for snow performance as laid out in Annex 7, and a new definition of traction elements to characterize traction tyres.

Proposal to ensure the continuity of the American Society for Testing and Materials (ASTM) Method E1337 for the measurement of the Peak Braking Coefficient (PBC) in UN Regulation No. 140, by introducing a reference to the new ASTM Standard Reference Test Tyre F2493.

Proposal to improve UN R78 alignment with UN R13-H provisions concerning the stop lamp signal.

Proposal to increase the potential speed reduction during the collision warning phase and clarify the interpretation of “engine start/run cycle”.

Proposal to align provisions with corresponding provisions of UN R152 and to clarify the interpretation of the provisions on system robustness when applied to heavy duty vehicles.

Proposal to align the text of UN R152 with recent updates to UN R131.

Proposal to align the text of UN R152 with recent updates to UN R131.

Proposal to align the text of UN R152 with recent updates to UN R131.

Proposal to clarify that the occurrence flag to be stored according to paragraph 8.2.1. (n) are linked to the abortion of the lane change manoeuvre rather than to the procedure and to make related clarifications for consistency.

Proposal to clarify provisions on preventing the installation of the filling unit under the body of M1 vehicles, to align the requirements for Ingress Protection grades to the latest IEC standard, and to recognise ISO 20653 as a valid alternative.

Proposal to clarify provisions on preventing the installation of the filling unit under the body of M1 vehicles, to align the requirements for Ingress Protection grades to the latest IEC standard, and to recognise ISO 20653 as a valid alternative.

Proposal to align the provisions of UN R105 with those of the new 2023 edition of the Agreement Concerning the International Carriage of Dangerous Goods by Road (ADR).

Proposal to clarify that the indicators, their identifications and the identifications of controls need not be illuminated when it is bright enough outside of the vehicle such as when daytime running lamps are operated.

Proposal to clarify the switch-off provisions of an FVA system in case of a backing event.

Proposal to align the 01 series with regard to “motive power” pursuant to Supplement 9 to the original version.

Proposal to introduce a minimum opening set pressure of the primary Liquid Natural Gas relief valve, add design qualification tests aligned with ISO 15500-13:2012 and the North American CSA/ANSI PRD 1 (2020), and align provisions with the requirements of ISO15500 and NGV3.1.

Proposal to correct and clarify the provisions for matched pairs.

Proposal to correct and clarify the provisions for matched pairs.

Proposal to correct and clarify the provisions for matched pairs.

Proposal to correct and clarify the failure provisions and provisions for matched pairs, ensure consistent use of the term “daytime running lamp” throughout the text, and to make corrections which inter alia re-insert parts of paragraphs 6.5.7. and 6.18.9.that were unintentional omitted in previous amendments.

Proposal to correct and clarify the failure provisions and provisions for matched pairs, ensure consistent use of the term “daytime running lamp” throughout the text, and to make corrections which inter alia re-insert parts of paragraphs 6.5.7. and 6.18.9. and the word “or” in para. 5.21.1.that were unintentional omitted in previous amendments.

Proposal to correct and clarify the failure provisions and provisions for matched pairs, ensure consistent use of the term “daytime running lamp” throughout the text, and to make corrections which inter alia re-insert parts of paragraphs 6.5.7. and 6.18.9. and the word “or” in para. 5.21.1.that were unintentional omitted in previous amendments.

Proposal to enable the use of Rear-End Collision Alert Signal (RECAS) on vehicles of category L₃.

Proposal to enable the use of Rear-End Collision Alert Signal (RECAS) on vehicles of category L₃.

Proposal to enable the use of Rear-End Collision Alert Signal (RECAS) on vehicles of category L₃.

Proposal to introduce provisions for magnetically attached special warning lamps.

Proposal to clarify conditions for use of the DETA Unique Identifier marking.

Proposal to clarify conditions for use of the DETA Unique Identifier marking.

Proposal to clarify conditions for use of the DETA Unique Identifier marking and to correct the Conformity of Production (CoP) values in Tables 26, 27, 28 and 29.

Proposal to clarify conditions for use of the DETA Unique Identifier marking.

Proposal to clarify conditions for use of the DETA Unique Identifier marking.

Proposal to clarify conditions for use of the DETA Unique Identifier marking.

Proposal to amend categories and clarify text in RE5 (ECE/TRANS/WP.29/1127) and its subsequent amendments 1 through 8.

Document to provide information on the existing national / regional activities on Data Storage System for Automated Driving (DSSAD) and individual Contracting Party recommendations for a proposed way forward for DSSAD.