Document ID: chunk:federal_register_of_legislation:F2007C00514:front:0:p9
Version: federal_register_of_legislation:F2007C00514
Segment Type: other
Provision Reference: 
Character Range: 24566–27599

the 'Manufacturer' specifications.
5.5.7.                              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 must 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.
5.5.8.                              Every motor vehicle equipped to tow a trailer must be so equipped that its brake system remains operative and has the performance of the Laden Secondary Brake Test (item 7 of Table 1) in the event of the trailer becoming disconnected.  This protection must be automatic.
5.5.8.1.                        Protection systems may vent the trailer 'Supply Line 35/...' but this must not commence;
5.5.8.1.1.                  until the energy level in the 'Supply Line 35/...' falls below 0.54 'E' (350 kpa) or,
5.5.8.1.2.                  if the 'Supply Line 35/...' energy level is reducing at a rate of not less than 0.15E/sec (100 kpa/sec), until the energy level in the 'Supply Line 35/...' falls below 0.65 'E'(420 kpa).
5.5.9.                              Every motor vehicle which provides its 'Secondary Braking System' by means of a 'Split Service Brake System' and which is equipped to tow a trailer which uses air at positive pressure, must be so equipped that the operation of the 'Secondary Brake System' causes a control signal proportional to the degree of braking to be present in the 'Control Line 35/...' .
5.5.10.                          An additional 'Control' may be fitted to provide for the independent application of a trailer 'Parking Brake System 38/00' .  Operation of the 'Control' must cause the pressure in the 'Supply Line 35/...' to drop below 35 kPa and remain below 35 kPa independently of the motor vehicle's 'Service Brake System'.
5.5.10.1.                    The 'Control' which actuates this function must be located so that it is readily accessible to the driver in the normal driving position and, marked with the words "TRAILER EMERGENCY BRAKES" and a description of how to operate the control, e.g. "TRAILER EMERGENCY BRAKES - PULL".  The 'Control' must also be marked with the words "NOT FOR PARKING".  The letters must be not less than 5 mm high.  Letters and background must be contrasting colours, one of which is red.
5.6.                                    Special Provisions for All Vehicles with 'Hydraulic Brake Systems'
5.6.1.                              In cases where the 'Service Brake System' incorporates a master cylinder, each service brake sub-system serviced by the master cylinder must have either:
5.6.1.1.                        a reservoir which contains fluid exclusively for the use of that service brake sub-system; or
5.6.1.2.                        a reservoir which contains fluid for the use of 2 or more service brake sub-systems, in which case that part of the reservoir capacity provided exclusively for the use of each service brake sub-system