Document ID: chunk:federal_register_of_legislation:F2021C00482:body:0:p8
Version: federal_register_of_legislation:F2021C00482
Segment Type: other
Provision Reference: 
Character Range: 21921–25051

specified in clause 35.2.1.2.6.
35.2.2.4.                    The 'Parking Brake System 35/00' shall incorporate devices which compensate for any increased movement of its components arising from wear. Such devices shall themselves contain provision for securing them throughout their working range in any position in which they may be adjusted to or to which they may themselves automatically adjust.
35.2.2.5.                    The 'Controls' by which the 'Parking Brake System 35/00' is actuated shall be located so that they are readily accessible to the driver in the normal driving position.
35.2.3.                          'Secondary Brake Systems'
35.2.3.1.                    The vehicle shall be equipped with a 'Secondary Brake System'.
35.2.3.2.                    Hydraulic service brake systems shall be 'Split Service Brake Systems'.
35.2.3.3.                    The vehicle, if equipped with one or more 'Brake Power Units 35/00', shall incorporate a 'Secondary Brake System' that is capable of application through the medium of a 'Control'.
35.2.3.4.                    The 'Control' of the 'Secondary Brake System' shall be capable of releasing and applying the secondary brake after its first application. The 'Control' shall be so placed that it can be operated by the driver in the normal driving position.
35.2.3.5.                    A 'Secondary Brake System' may utilise elements of the service brake system.
35.2.3.6.                    Where the 'Secondary Brake System' is a 'Spring Brake System':
35.2.3.6.1.              in a single circuit service brake system, the energy supply system for maintaining the secondary brake in its released position shall include a 'Stored Energy' device that does not service any other device or equipment;
35.2.3.6.2.              in the event of failure of the energy supply to any one circuit of a service brake system employing two or more independent circuits, the energy requirements for retaining the secondary brakes in the released position shall be supplied from the 'Stored Energy' device(s) of the other circuits or optionally from an independent 'Stored Energy' device; and
35.2.3.6.3.              with the 'Stored Energy' device charged to its 'Average Operating Pressure' it shall have sufficient capacity to permit the 'Secondary Brake System' to be applied and released not fewer than 2 times when the brakes are adjusted so that the distance travelled by the device which directly actuates the brake shoe or pad is a maximum or optionally 3 times when the brakes are adjusted to the 'Manufacturer's' specifications.
35.2.3.7.                    In a vehicle equipped with a 'Brake Power Assist Unit' normally supplied with high pressure fluid by an engine driven pump, a back-up system shall be regarded as a 'Secondary Brake System' if the back up source of power assistance is immediately energised by a pump driven independently of the vehicle engine.
35.2.3.8.                    Every motor vehicle used to haul a trailer (including a 'Semi-trailer') shall be so equipped that its brake system shall remain operative and have the performance