Document ID: chunk:federal_register_of_legislation:F2007C00514:front:0:p17
Version: federal_register_of_legislation:F2007C00514
Segment Type: other
Provision Reference: 
Character Range: 47338–50512

initial speed must be not less than 80 percent of the 'Maximum Laden Vehicle Speed' and the final speed must not be greater than half the initial speed.
8.9.5.                              During all deceleration modes the lowest numerical overall drive ratios as specified in clause 7.7 must be continuously engaged.  Deceleration modes must be conducted from the initial speed to the final speed.
8.9.6.                              During acceleration periods the drive train must be employed to regain the initial speed in the shortest possible time.
8.9.7.                              Notwithstanding the foregoing requirements, changes of vehicle direction essential to testing and negotiation of curved sections of track may be undertaken at constant vehicle speed.
8.9.8.                              If the vehicle's performance characteristics are such as to preclude it from maintaining the specified maximum interval between successive brake applications, the time interval may be increased to the minimum time required by the vehicle to achieve the specified initial speed and to maintain it for 10 seconds before each successive deceleration mode.
8.9.9.                              Vehicles must attain a sustained deceleration of not less than 3 m/s 2 during the first deceleration mode.  Subsequent deceleration must be conducted employing a 'Control' force not less than that established during the first deceleration mode without regard to the actual deceleration achieved.
8.9.10.                          The Service Brake Fade Test must be followed immediately by the Service Brake Fade Effectiveness Check.
8.10.                                Service Brake Fade Effectiveness Check
         The vehicle must be accelerated over a distance not exceeding 1.6 km from the final speed attained at the conclusion of the deceleration mode of the Service Brake Fade Test to the initial speed specified in Table 1 (Item 10) and the test carried out in accordance with that Item.  The vehicle must be deemed to satisfy the requirements of this test if the deceleration achieved is not less than that specified in Table 1 (Item 10).
8.11.                                Service Brake Water Conditioning Procedure
8.11.1.                          The Service Brake Water Conditioning Procedure applies to both Forward-control Passenger Vehicles (MB) and Off-road Passenger Vehicles (MC).
8.11.2.                          Service brake water conditioning must be carried out in accordance with the requirements of either clause 8.11.3 or clause 8.11.4.
8.11.3.                          Water Immersion. The vehicle must be driven with the service brake released through water of depth of not less than 60 percent of the 'Static Loaded Tyre Radius' of the tyres fitted, for a period of at least 2 minutes.  During such period, the vehicle speed must not exceed 10 km/h and for at least one minute, must not be less than 5 km/h.  For the purpose of this clause changes from "drive" to "reverse" and "reverse" to "drive" are considered as continuous driving.
8.11.4.                          Water Spray. The braking surfaces of all brake assemblies fitted to the