Document ID: chunk:federal_register_of_legislation:F2018C00788:front:0:p4
Version: federal_register_of_legislation:F2018C00788
Segment Type: other
Provision Reference: 
Character Range: 11992–15118

TRAILERS

_________
UNITED NATIONS
Regulation No. 30

UNIFORM PROVISIONS CONCERNING THE APPROVAL OF PNEUMATIC
TYRES FOR MOTOR VEHICLES AND THEIR TRAILERS

CONTENTS

REGULATION

1. Scope
2. Definitions
3. Markings
4. Application for approval
5. Approval
6. Requirements
7. Modifications of the type of pneumatic tyre and extension of approval

8. Conformity of production
9. Penalties for non-conformity of production
10. Production definitively discontinued
11. Transitional provisions
    12. Names and addresses of Technical Services responsible for conducting approval tests and of Administrative Departments

ANNEXES

        Annex 1 - Communication concerning the approval or extension or refusal or withdrawal of approval or production definitely discontinued of a type of pneumatic tyre for motor vehicles pursuant to Regulation No. 30

        Annex 2 - Example of the arrangement of the approval mark

        Annex 3 - Arrangement of tyre markings

        Annex 4 - Load-capacity indices

        Annex 5 - Tyre size designation and dimensions

        Annex 6 - Method of measuring pneumatic tyres

        Annex 7 - Procedure for load/speed performance tests

1.  SCOPE

         This Regulation covers new pneumatic tyres designed primarily, but not only, for vehicles in categories M1, O1 and O2. [1]/
    It does not apply to tyres designed for
    (a) the equipment for vintage cars
    (b) competitions.

2.  DEFINITIONS

    For the purposes of this Regulation,

         2.1. "Type of pneumatic tyre" means a category of pneumatic tyres which do not differ in such essential respects as:

2.1.1.  The manufacturer;

2.1.2.  Tyre-size designation;

2.1.3.  Category of use (ordinary (road-type) or snow tyre or for temporary use);

2.1.4.  Structure (diagonal (bias-ply), bias-belted, radial-ply, run flat tyre);

2.1.5.  Speed category symbol;

2.1.6.  Load-capacity index;

2.1.7.  Tyre cross-section;

         2.2. "Snow tyre" means a tyre whose tread pattern and whose structure are primarily designed to ensure in mud and fresh or melting snow a performance better than that of an ordinary (road-type) tyre.  The tread pattern of a snow tyre generally consists of groove (rib) and/or solid-block elements more widely spaced than on an ordinary (road-type) tyre;

         2.3. "Structure" of a pneumatic tyre means the technical characteristics of the tyre's carcass.  The following structures are distinguished in particular;

         2.3.1. "Diagonal" or "bias-ply" describes a pneumatic-tyre structure in which the ply cords extend to the beads and are laid at alternate angles of substantially less than 90° to the centre line of the tread;

         2.3.2 "Bias-belted" describes a pneumatic-tyre structure of diagonal (bias-ply) type in which the carcass is restricted by a belt comprising two or more layers of substantially inextensible cord material laid at alternate angles close to those of the carcass;

         2.3.3. "Radial" describes a pneumatic-tyre structure in which the ply cords extend to the beads and are laid substantially at 90° to the centre line of the tread, the carcass