Document ID: chunk:federal_register_of_legislation:F2021C00476:body:0:p11
Version: federal_register_of_legislation:F2021C00476
Segment Type: other
Provision Reference: 
Character Range: 30513–33416

adversely affected by magnetic or electrical fields.  (This shall be demonstrated by compliance with Regulation No. 10, 02 series of amendments.)

         5.1.1.5. A failure detection signal may interrupt momentarily (< 10 ms) the demand signal in the control transmission, provided that the braking performance is thereby not reduced.

         5.1.2. Functions of the braking equipment

          The braking equipment defined in paragraph 2.3. must fulfil the following functions:

         5.1.2.1. Service braking system

         The service braking system must make it possible to control the movement of the vehicle and to halt it safely, speedily and effectively, whatever its speed and load, on any up or down gradient.  It must be possible to graduate this braking action.  The driver must be able to achieve this braking action from his driving seat without removing his hands from the steering control.

         5.1.2.2. Secondary braking system

         The secondary braking system must make it possible by application of the service brake control to halt the vehicle within a reasonable distance in the event of failure of the service braking system.  It must be possible to graduate this braking action.  The driver must be able to obtain this braking action from his driving seat without removing his hands from the steering control.  For the purposes of these provisions it is assumed that not more than one failure of the service braking system can occur at one time.

         5.1.2.3. Parking braking system

          The parking braking system must make it possible to hold the vehicle stationary on an up or down gradient even in the absence of the driver, the working parts being then held in the locked position by a purely mechanical device.  The driver must be able to achieve this braking action from his driving seat.

         5.1.3. The requirements of Annex 8 shall be applied to the safety aspects of all complex electronic vehicle control systems which provide or form part of the control transmission of the braking function included those which utilize the braking system(s) for automatically commanded braking or selective braking.

          However, systems or functions, which use the braking system as the means of achieving a higher level objective, are subject to Annex 8 only insofar as they have a direct effect on the braking system.  If such systems are provided, they must not be deactivated during type approval testing of the braking system.

         5.1.4. Provisions for the periodic technical inspection of braking systems

         5.1.4.1. It shall be possible to assess the wear condition of the components of the service brake that are subject to wear e.g. friction linings and drums/discs (in the case of drums or discs, wear assessment may not necessarily be carried out at the time of periodic technical inspection).  The method by which