Document ID: chunk:federal_register_of_legislation:F2018C00341:body:0:p9
Version: federal_register_of_legislation:F2018C00341
Segment Type: other
Provision Reference: 
Character Range: 25525–28612

Brake System 35/..' is released.
4.3.7.                              An additional 'Control' may be fitted to provide for the independent release of the trailer parking brakes.  Once the 'Supply Line 35/...' pressure has dropped below 35 kPa in accordance with clause 4.3.5 this control must restore the 'Supply Line 35/...' to the normal condition provided that:
4.3.7.1.                        two independent actions are required:
4.3.7.2.                        the engine is running; and
4.3.7.3.                        the 'Control' must automatically reset to provide for operation of the 'Parking Brake System 35/..' as described in clause 4.3.5 no later than upon the next application of the 'Control' for the 'Parking Brake System 35/...'.
4.4.                                    Parking Brake Indicator Lamp
4.4.1.                              If the vehicle is not fitted with a 'Spring Brake System' or a 'Parking Brake System 35/..' utilizing 'Lock Actuators'  , it must be provided with a lamp which indicates that the parking brake is engaged.
4.4.2.                              The lamp may be common with or distinct and separate from any 'Service Brake System' failure 'Visible Indicator' lamp.
4.4.3.                              In the case of a common lamp, the lamp must be labelled with the word "BRAKE"; or the symbol for "BRAKE FAILURE" - specified as Number 4.31 in the ISO document referred to in clause 4.2.10.
4.4.4.                              In the case of a distinct and separate lamp the lamp must be labelled with at least the words "PARK BRAKE" or "PARKING BRAKE"; or the symbol for "PARKING BRAKE" specified as Number 4.32 in the ISO document referred to in clause 4.2.10 placed either directly on the lens or adjacent to it in such a way that the label is illuminated by the same light source as the lens.
4.4.5.                              The letters of the label must be not less than 3 mm high and must be of contrasting colour to their background when illuminated.  If the label is directly on the lens the colour of either label or lens must be red and if the label is not on the lens the colour of the lens must be red.
4.4.6.                              The parking brake indicator lamp and its specified label must be located within the space boundaries specified in clause 4.2.12.
4.5.                                    Secondary Brake Systems
4.5.1.                              The vehicle must be equipped with a 'Secondary Brake System'.
4.5.2.                              Hydraulic 'Service Brake System' must be 'Split Service Brake System'.
4.5.3.                              If the vehicle is equipped with one or more 'Brake Power Units 35/...' the 'Secondary Brake System' must be capable of application through the medium of a 'Control'.
4.5.4.                              The 'Control' of the 'Secondary Brake System' must be capable of releasing and applying the secondary brake after its first application.  The 'Control' must be so placed that it can be operated by the driver in the normal driving position.
4.5.5.