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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States relating to the braking devices of certain categories of motor vehicles and of their trailers (71/320/EEC) (repealed)
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- Revised 01/11/20140.44 MB
- Revised 01/07/20131.78 MB
- Revised 01/01/20071.13 MB
- Revised 01/05/20041.16 MB
- Revised 24/10/20021.16 MB
- Revised 07/04/19981.14 MB
- Revised 22/08/19910.91 MB
- Revised 30/03/19880.84 MB
- Revised 03/01/19860.84 MB
- Revised 24/04/19790.57 MB
- Revised 31/07/19750.50 MB
- Revised 20/02/19740.40 MB
- Revised 01/01/19730.36 MB
- Revised 30/07/19710.36 MB
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Changes over time for: Division 3.5.
Version Superseded: 01/11/2014
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EU Directives are published on this site to aid cross referencing from UK legislation. Since IP completion day (31 December 2020 11.00 p.m.) no amendments have been applied to this version.
[F13.5. Test procedures U.K.
3.5.1. Supplementary cold performance test U.K.
3.5.1.1. This test shall be carried out at an initial speed equivalent to 40 km/h in the case of Type I test and 60 km/h in the case of Type III test in order to evaluate the hot braking performance at the end of Type I and Type III tests. U.K.
3.5.1.2. Three brake aplications shall be made at the same pressure (p) and at an initial speed equivalent to 40 km/h (in the case of Type I test) or to 60 km/h (in the case of Type III test), with an approximately equal initial brake temperature not exceeding 100 °C, measured at the outside surface of the drum. The applications are at the brake actuator pressure required to give a brake torque or force equivalent to a braking rate (z) of at least 0,50. The brake actuator pressure shall not exceed 6,5 bar, and the camshaft input torque (C) shall not exceed the maximum technically permissible camshaft input torque (C max ). The average of the three results shall be taken as the cold performance. U.K.
3.5.2. Type I test U.K.
3.5.2.1. This test shall be carried out at a speed equivalent to 40 km/h with an initial brake temperature not exceeding 100 °C, measured at the outside surface of the drum. U.K.
3.5.2.2. A braking rate shall be maintained at 0,07 including the rolling resistance (see point 3.2.4). U.K.
3.5.2.3 The duration of the test shall be two minutes and 33 seconds or 1,7 km at 40 km/h. If the test velocity cannot be achieved then the duration of the test can be lengthened according to point 1.3.2.2. of Annex II. U.K.
3.5.2.4. Not later than 60 seconds after the end of the Type I fade test, a hot performance test shall be carried out in accordance with point 1.3.3 of Annex II at an initial speed equivalent to 40 km/h. The brake actuator pressure shall be that used during the cold performance test. U.K.
3.5.3. Type III test (fade test) U.K.
3.5.3.1. Test methods for repeated braking. U.K.
3.5.3.1.1. Track tests (see Annex II, point 1.6). U.K.
3.5.3.1.2. Inertia dynamometer test. U.K.
For the bench test as in Annex VII, Appendix 1, point 3.2, the conditions may be as for the road test according to Annex II point 1.6.1 where
3.5.3.1.3. Rolling road dynamometer test U.K.
For the bench test as in Annex VII, Appendix 1, point 3.3, the conditions shall be as follows:
| Number of brake applications | 20 |
| Duration of braking cycle (braking time 25 seconds and recovery time 35 seconds) | 60 seconds |
| Test speed | 30 km/h |
| Braking rate | 0,06 |
| Rolling resistance | 0,01. |
3.5.3.2. Not later than 60 seconds after the end of the Type III test a hot performance test shall be carried out in accordance with point 1.6.2 of Annex II to this Directive. The brake actuator pressure shall be that used during the Type 0 test.] U.K.
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