Document ID: chunk:federal_register_of_legislation:F2021C00434:body:0:p14
Version: federal_register_of_legislation:F2021C00434
Segment Type: other
Provision Reference: 
Character Range: 39840–43028

wind velocity opposite to the direction of travel of the vehicle does not exceed 15 km/h.
6.7.                                    Where a test requires that the gear selector be in "drive" the transmission selector control must be in the control position recommended by the 'Manufacturer' as appropriate to the speed of the vehicle at the commencement of the deceleration mode.
6.8.                                    If the vehicle is not capable of attaining the initial speed requirement specified for a particular deceleration test, then, unless otherwise specified, the initial speed must be within 10 km/h of the 'Maximum Laden Vehicle Speed'.  The 'Average Deceleration' so required must be determined from the expressions:

       a =         u2
                   2s

  and
where:
                   S   =  'Stopping Distance', in metres
                   V  =  initial speed, in km/h
                 K 1, K2  =  constants, dependent on test and category, (see Table 3)
                   u  =  initial speed, in m/s
                   a =  'Average Deceleration', in m/s 2
6.9.                                    For all effectiveness, secondary brake and partial failure tests, all parts of the vehicle must remain inside a straight lane not exceeding 3.7 metres in width, the vehicle being positioned at the approximate centre of the lane at the commencement of the deceleration.
6.10.                                Except in the case of the Parking Brake Test, each test procedure may be preceded by a series of stops or decelerations, provided the temperature measured at the surface of the disc or drum does not exceed 100°C immediately prior to the commencement of the test required by Table 1.
6.11.                                Except as permitted by clause 7.2 brakes must not be adjusted during testing.  Automatic brake adjusters, if fitted, may be rendered inoperative prior to commencement of the optional Service Brake Burnishing Procedure.  In cases where this option is exercised, adjusters must remain inoperative for the duration of the test program.
6.12.                                Except where clause 6.8 applies, any vehicle speed must not be below that specified by more than 1 km/h.
6.13.                                Where an 'Antilock System' is fitted, it must be engaged throughout all tests except the partial failure tests where a failure in the 'Antilock System' is simulated.
6.13.1.                          Additional tests may be optionally conducted with the 'Antilock System' disengaged to demonstrate that the vehicle meets the performance requirements of all tests specified in part 7 when a failure in the 'Antilock System' is simulated.
6.14.                                Where a 'Retractable Axle' is fitted, a vehicle has a number of 'Configurations'. It must be demonstrated that in each 'Configuration', the vehicle complies with the laden condition requirements of this Rule for that 'Configuration'.  The laden condition for a 'Configuration' with the 'Axle' retracted must be considered to be when the 'Axle Group' is laden to the 'Prescribed Transition Mass' for the 'Configuration' being considered.  As the vehicle