Council Directive of 26 July 1971 on the approximation of the laws of the Member States relating to the braking devices of certain categories of motor vehicles and of their trailers (71/320/EEC) (repealed)

[F1 4. TEST PROCEDURE U.K.

4.1. Five sample sets of the brake lining shall be subjected to the comparison test. They shall be compared with five sets of linings conforming to the original components identified in the information document concerning the first approval of the vehicle-type concerned. U.K.

4.2. Brake lining equivalence shall be based on a comparison of the results achieved using the test procedures prescribed in this Annex and in accordance with the following requirements: U.K.

4.3. Type 0 cold performance test U.K.

4.3.1. Three brake applications shall be made when the initial temperature is below 100 °C. The temperature shall be measured in accordance with the provisions of point 2.1.4.4. U.K.

4.3.2. In the case of brake linings intended for use on vehicles of categories M and N, brake applications shall be made from an initial rotational speed equivalent to that given in point 2.1.1.1.1 of Annex II and the brake shall be applied to achieve a mean torque equivalent to the mean fully developed deceleration prescribed in that item. In addition, tests shall be carried out at several rotational speeds, the lowest being equivalent to 30 % of the maximum speed of the vehicle and the highest being equivalent to 80 % of that speed. U.K.

4.3.3. In the case of brake linings intended for use on vehicles of category O, brake applications shall be made from an initial rotational speed equivalent to 60 km/h, and the brake shall be applied to achieve a mean torque equivalent to that prescribed in point 2.2.1 of Annex II. A supplementary cold performance test from an initial rotational speed equivalent to 40 km/h shall be carried out for comparison with the Type I test result as described in point 2.2.1.2.1 of Annex II. U.K.

4.3.4. The mean braking torque during the above cold performance tests on the linings being tested for the purpose of comparison shall, for the same input measurement, be within the test limits ± 15 % of the mean braking torque recorded with the brake linings conforming to the component identified in the relevant application for vehicle type approval. U.K.

4.4. Type I test U.K.

4.4.1. With repeated braking U.K.

4.4.1.1. Brake linings for vehicles of categories M and N shall be tested according to the procedure given in point 1.3.1 of Annex II. U.K.

4.4.2. With continuous braking U.K.

4.4.2.1. Brake linings for trailers of category O shall be tested in accordance with point 1.3.2 of Annex II. U.K.

4.4.3. Hot performance U.K.

4.4.3.1. On completion of the tests required under points 4.4.1 and 4.4.2 above, the hot braking performance test specified in point 1.3.3 of Annex II shall be carried out. U.K.

4.4.3.2. The mean braking torque during the above hot performance tests on the linings being tested for the purpose of comparison shall, for the same input measurement, be within the test limits ± 15 % of the mean braking torque recorded with the brake linings conforming to the component identified in the relevant application for vehicle type approval. U.K.

4.5. Type II test U.K.

4.5.1. This test shall be required only if, on the vehicle-type in question, the friction brakes are used for the Type II test. U.K.

4.5.2. Brake linings for motor vehicles of category M ₃ and N ₃ (except those required under point 2.2.1.19 of Annex I to undergo a Type IIA test), shall be tested according to the procedure set out in point 1.4.1 of Annex II. Trailers of category O ₄ shall be tested according to the procedure set out in point 1.6. of Annex II U.K.

4.5.3. Hot performance U.K.

4.5.3.1. On completion of the test required under point 4.5.2 above, the hot performance test specified in point 1.4.3 of Annex II shall be carried out. U.K.

4.5.3.2. The mean braking torque during the above hot performance tests on the linings being tested for the purpose of comparison shall, for the same input measurement, be within the test limits ± 15 % of the mean braking torque recorded with the brake linings conforming to the component identified in the relevant application for vehicle type approval. U.K.

4.6. Fade test (Type III test) U.K.

4.6.1. Test with repeated braking U.K.

4.6.1.1. Brake linings for trailers of category O ₄ , shall be tested according to the procedure given in point 1.6 of Annex II to this Directive. U.K.

4.6.3. Hot performance U.K.

4.6.3.1. On completion of the tests required under points 4.6.1 and 4.6.2 of this Annex, the hot-braking performance test specified in point 1.6.2 of Annex II to this Directive shall be completed. U.K.

4.6.3.2. The mean braking torque during the above hot performance test on the linings being tested for the purpose of comparison shall, for the same input measurement, be within the test limits ± 15 % of the mean braking torque recorded with the brake linings conforming to the component identified in the relevant application for vehicle type approval.] U.K.

Textual Amendments

F1 Substituted by Commission Directive 98/12/EC of 27 January 1998 adapting to technical progress Council Directive 71/320/EEC on the approximation of the laws of the Member States relating to the braking devices of certain categories of motor vehicles and their trailers (Text with EEA relevance).