Division 1 DefinitionsF1

For the purposes of this Annex:

1. 1.1.

   ‘ subject towed vehicle ’ means a towed vehicle representative of the towed vehicle type for which type-approval is sought;

2. 1.2.

   ‘ identical ’ means parts having identical geometric and mechanical characteristics and the materials used for the components of the vehicles;

3. 1.3.

   ‘ reference axle ’ means an axle for which there is a test report;

4. 1.4.

   ‘ reference brake ’ means a brake for which there is a test report;

5. 1.5.

   ‘ nominal test mass ’ means the mass of a disc or drum which the manufacturer specifies for the disc or drum, respectively, with which the relevant test is carried out by the Technical Service;

6. 1.6.

   ‘ actual test mass ’ means the mass measured by the Technical Service prior to the test;

7. 1.7.

   ‘ brake input threshold torque ’ means the input torque necessary to produce a measurable brake torque;

8. 1.8.

   ‘ declared brake input threshold torque ’ means the brake input threshold torque declared by the manufacturer and which is representative for the brake;

9. 1.9.

   ‘ declared external diameter ’ means the external diameter of a disc declared by the manufacturer which is representative external diameter for the disc;

10. 1.10.

    ‘ nominal external diameter ’ means the external diameter which the manufacturer specifies for the disc on which the relevant test is carried out by the Technical Service;

11. 1.11.

    ‘ actual external diameter ’ means the external diameter of a disc measured by the Technical Service prior to the test;

12. 1.12.

    ‘ effective length of the cam shaft ’ means the distance from the centre line of the S-cam to the centre line of the operating lever;

13. 1.13.

    ‘ brake factor ’ means the input to output amplification ratio of the brake.