Document ID: chunk:federal_register_of_legislation:F2025C00108:reg:4:p9
Version: federal_register_of_legislation:F2025C00108
Segment Type: reg
Provision Reference: reg 4 (pt 9/25)
Character Range: 110449–113501

warning signal fulfilling the requirements of clause 3.1 of this appendix.
         1.                     The warning signal must be constant and remain displayed as long as the failure or defect persists and the ignition (start) switch is in the 'on' (run) position.
         2.                     A procedure for checking if a vehicle meets the requirements of this clause, is set out in clause 7 of Annex 1 to this appendix.
     4.                            In the case of a power-driven vehicle equipped with an electric 'Control Line' and electrically connected to a trailer with an electric 'Control Line' the driver must be warned by a specific optical warning signal with the same provisions as the signal defined in clause 3.1 of this appendix, whenever the trailer provides the information "VDC Active" via the data communications part of the electric 'Control Line'.  The optical signal defined in clause 3.1 of this appendix may be used for this purpose and operate as defined in clause 3.2 of this appendix (note: VDC or Vehicle Dynamic Control, as defined within ISO 11992‑2:2003 including Amd.1:2007, is defined within this national standard as a 'Vehicle Stability Function').

       Diagram 1 – Vehicle Stability Function Intervention/Failure Tell-tale
Note: The vehicle outline shown is not intended to be restrictive, but is the recommended outline.  Alternative vehicle outlines may be used in order to better represent the actual outline of a given vehicle, so long as the distinctive 'S' skid mark to indicate a 'Vehicle Stability Function' is present.

 1.                                  Performance requirements for category ME vehicles with a 'GVM' exceeding 12 tonnes and category NC 'Prime Movers'
     1.                            Reference Speed[7]
         1.                     Category ME vehicles with a 'GVM' exceeding 12 tonnes and category NC 'Prime Movers' must satisfy the criteria of clauses 4.1.1.1 and 4.1.1.2 below.
             1.                 The wheels of the 'Prime Mover' or Omnibus must remain within the lane between the start gate and the end gate, during at least two of each series of not more than four consecutive tests, conducted in accordance with clause 6.1.2 of Annex 1 to this appendix.
             2.                 The Reference Speeds determined for clockwise and anti-clockwise steering, from the tests conducted in accordance with clause 6.1.2 of Annex 1 to this appendix, must not exceed VRmax.
where:
       ; and
       R = the fixed radius (in metres) of the 'J-Turn Test Course' (measured from the centre of the lane) selected by the 'Manufacturer'.
 1.                            Engine torque reduction
     1.                     Category ME vehicles with a 'GVM' exceeding 12 tonnes and category NC 'Prime Movers' must satisfy the criteria of clauses 4.2.1.1 and 4.2.1.2 below, during at least two of each series (clockwise and anti‑clockwise) of not more than four consecutive tests, conducted in accordance with clause 6.2 of Annex 1 to this appendix.
         1.