Document ID: chunk:federal_register_of_legislation:F2025C00110:reg:2:p19
Version: federal_register_of_legislation:F2025C00110
Segment Type: reg
Provision Reference: reg 2 (pt 19/22)
Character Range: 68204–71345

the vehicle system under non-fault conditions shall be conducted against the manufacturer's basic benchmark specification unless this is subject to a specified performance test as part of the approval procedure of this or another Regulation.

              4.1.2. Verification of the safety concept of paragraph 3.4. above

               The reaction of "The System" shall, at the discretion of the Type Approval Authority, be checked under the influence of a failure in any individual unit by applying corresponding output signals to electrical units or mechanical elements in order to simulate the effects of internal faults within the unit.

              The verification results shall correspond with the documented summary of the failure analysis, to a level of overall effect such that the safety concept and execution are confirmed as being adequate.

APPENDIX B

      Definitions used in this standard for omnibuses, and medium and heavy goods vehicles 'designed for off-road use'

 1.                                  Omnibuses with a 'Gross Vehicle Mass' not exceeding 12 tonnes and medium goods vehicles
     1.                            Category MD vehicles, category ME vehicles with a 'Gross Vehicle Mass' not exceeding 12 tonnes, and category NB vehicles are considered to be 'designed for off-road use' if all their wheels are designed to be driven simultaneously, including vehicles where the drive to one axle can be disengaged, or if the following three criteria are satisfied:
            1.       At least one front axle and at least one rear axle are designed to be driven simultaneously, including vehicles where the drive to one axle can be disengaged; and
            2.       There is at least one differential locking mechanism or at least one mechanism having a similar effect; and
            3.       They can climb a 25 per cent gradient calculated for a solo vehicle.

 1.                                  Omnibuses with a 'Gross Vehicle Mass' exceeding 12 tonnes and heavy goods vehicles
     1.                            Category ME vehicles with a 'Gross Vehicle Mass' exceeding 12 tonnes and category NC vehicles are considered to be 'designed for off-road use' if all of the following criteria are satisfied:
            1.       All wheels are driven, except where applicable, when the drive to one 'Axle' is disengaged; and
            2.       There is at least one differential locking mechanism or at least one mechanism having a similar effect; and
            3.       They can climb a 25 per cent gradient calculated for a solo vehicle; and
            4.       At least four of the following six criteria are satisfied:
                  1.         The 'Approach Angle' is at least 25°;
                  2.       The 'Departure Angle' is at least 25°;
                  3.    The 'Breakover Angle' is at least 25°;
                  4.     The 'Ground Clearance' under the front axle is at least 250 mm;
                  5.       The 'Ground Clearance' between the axles is at least 300 mm;
                  6.     The 'Ground Clearance' under the rear axle is at least 250 mm.

 2.