Document ID: chunk:federal_register_of_legislation:F2025C00108:reg:4:p5
Version: federal_register_of_legislation:F2025C00108
Segment Type: reg
Provision Reference: reg 4 (pt 5/25)
Character Range: 98469–101921

(km/h)  Minimum 'Average Deceleration' (m/s2)  Vehicle Mass  Transmission Condition(s)  'Control' Force (N)
'Antilock System' Lightly Laden Effectiveness (low speed)*   MB, MC, MD, ME,   40 (-1/+5)                                                   L             N and/or †                 685 or full stroke (see text)
                                                             NA, NB, NC
'Antilock System' Lightly Laden Effectiveness (high speed)*  MB, MC, MD, ME,   ≥ 80
                                                             NA, NB, NC
'Antilock System' Laden Effectiveness (low speed)*           MB, MC, MD, ME,   40 (-1/+5)                                                   M             N and/or †                 685 or full stroke (see text)
                                                             NA, NB, NC
'Antilock System' Laden Effectiveness (high speed)*          MB, MC, MD, ME,   ≥ 80
                                                             NA, NB, NC

    "M" means 'Maximum Loaded Test Mass 35/...'
    "L" means 'Lightly Loaded Test Mass 35/...'
    "N" means transmission control in "neutral" position
    "†" means clutch disengaged (i.e. clutch pedal fully depressed)

    u = initial speed, in m/s
    S = maximum 'Stopping Distance', in metres =
    V = initial speed, in km/h

    K = 130 for category MB, MC, MD and ME vehicles
     = 115 for category NA vehicles
     = 130 for category NB and NC vehicles, equipped to tow a trailer which uses air at a positive pressure
     = 115 for category NB and NC vehicles, not equipped to tow a trailer which uses air at a positive pressure

APPENDIX 3

     'Vehicle Stability Function' requirements for omnibuses, and goods vehicles over 3.5 tonnes 'GVM' (as required by clause 5.1.8)

 1.                                  Definitions
     1.                            'Ackerman Steer Angle' means the angle whose tangent is the 'Wheelbase' divided by the radius of the turn at a very low speed.
     2.                            'Automatically Commanded Braking' means a function within a complex electronic control system where actuation of the braking system(s) or brakes of certain axles is made for the purpose of generating vehicle retardation with or without a direct action of the driver, resulting from the automatic evaluation of on board initiated information.
     3.                            'Control Trailer' means a 'Semi-trailer' in accordance with clause 3 of Annex 1 to this appendix.
     4.                            'Directional Control' means a function within a 'Vehicle Stability Function' that assists the driver, in the event of 'Understeer' and 'Oversteer' conditions, within the physical limits of the vehicle in maintaining the direction intended by the driver in the case of a power-driven vehicle, and assists in maintaining the direction of the trailer with that of the towing vehicle in the case of a trailer.
     5.                            'Entrance Speed' (of a J-Turn test) means the 0.5 second average of the test vehicle raw speed data, prior to any 'Vehicle Stability Function Service Brake Application', and rounded to the nearest 1.0 km/h.
     6.                            'Initial Brake Temperature' means the average temperature of the service brakes on the hottest 'Axle' of the vehicle immediately before any J-Turn test procedure is executed.
     7.                            'J-Turn Test Course' means