UNITED

NATIONS

Distr.

Economic and Social	GENERAL

Council	TRANS/WP.29/726
3 May 2000
ENGLISH

Original: ENGLISH and

FRENCH

ECONOMIC COMMISSION FOR EUROPE

INLAND TRANSPORT COMMITTEE

World Forum for Harmonization of Vehicle Regulations (WP.29)

DRAFT SUPPLEMENT 12	TO REGULATION No. 54

(Pneumatic tyres for commercial vehicles)

Note: The text reproduced below was adopted by the Administrative Committee (AC.1) of the amended 1958 Agreement at its fourteenth session, following the recommendation by WP.29 at its one-hundred-and-twentieth session. It is based on document TRANS/WP.29/2000/5, not amended (TRANS/WP.29/703, para. 170).

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GE.00-

Insert a new paragraph 2.10.1., to read:

"2.10.1.	However, in case of tyres identified by the "tyre to rim fitment configuration" (see paragraph 3.1.11.) symbol "A", it means the area of the tyre which is seating on the rim."

Insert new paragraphs 2.17.2. to 2.17.2.5., to read:

"2.17.2.	In case of tyres identified by the "tyre to rim fitment configuration" (see paragraph 3.1.11.) symbol "A", a designation showing the information as per the following

example: 235-700 R 450A.

2.17.2.1.	The nominal section width expressed in mm (e.g. 235).

2.17.2.2.	The outer diameter expressed in mm (e.g. 700).

2.17.2.3.	The indication of the structure as per paragraph 3.1.3. (e.g. R).

2.17.2.4.	The nominal diameter of the rim expressed in mm (e.g. 450).

2.17.2.5.	The "tyre to rim fitment configuration" (see paragraph 3.1.3.) symbol "A"."

Insert a new paragraph 3.4.1., to read:

"3.4.1.	However, for tyres identified by the "tyre to rim fitment configuration" (see paragraph 3.1.11.) symbol "A", the markings may be placed anywhere on the sidewall of the tyre."

Paragraph 5.4.1., footnote 4/, amend to read:

".... 29 for Estonia, 30 (vacant), 31 for Bosnia and Herzegovina, 32 for Latvia, 33 (vacant), 34 for Bulgaria, 35-36 (vacant), 37 for Turkey, 38-39 (vacant), 40 for The former Yugoslav Republic of Macedonia, 41 (vacant), 42 for the European Community (Approvals are granted by its Member States using their respective ECE symbol) and 43 for Japan. Subsequent numbers shall be assigned to other countries in the chronological order in which they ratify or accede to the Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles, Equipment and Parts which can be Fitted and/or be Used on Wheeled Vehicles and the Conditions for Reciprocal Recognition of Approvals Granted on the Basis of these Prescriptions, and the numbers thus assigned shall be communicated by the Secretary-General of the United Nations to the Contracting Parties to the Agreement."

Insert a new paragraph 6.1.1.3., to read:

"6.1.1.3.	However, for tyres identified by the "tyre to rim fitment configuration" (see paragraph 3.1.11.) symbol "A", K shall be taken to equal 0.6."

Insert a new paragraph 6.1.2.3., to read:

"6.1.2.3.	However, for tyres identified by the "tyre to rim fitment configuration" (see paragraph 3.1.11.) symbol "A", the outer diameter shall be that specified in the tyre size designation as shown on the sidewall of the tyre."

Insert a new paragraph 6.1.4.3., to read:

"6.1.4.3.	However, for tyres identified by the "tyre to rim fitment configuration" (see paragraph 3.1.11.) symbol "A", the overall width of the tyre, in the lower area of the tyre, equals the nominal width of the rim on which the tyre is mounted, as shown by the manufacturer in the descriptive note, increased by 27 mm."

Paragraph 6.1.5.1., amend to read:

"6.1.5.1.	For sizes listed in annex 5 and for tyres identified by the "tyre to rim fitment configuration" (see paragraph 3.1.11.) symbol "A", the nominal section height H is equal to:

H = 0.5 (D-d) - for references see paragraph 6.1.2.1."

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