2 of ISO 7638: 1997 , Road vehicles – Electrical connectors for braking systems¹ . 31. The brake force applied to a wheel of a heavy vehicle first registered in NZ or modified on after 1. July 2008during braking on a hard, dry, clean and level surface is not approximately proportional to the load on the wheel, taking into account the dynamic load transfer that occurs during braking between the axles of a vehicle and that also may occur between the vehicles of a combination vehicle, at all

specialist inspection and certification of heavy vehicle brakes (refer to Technical bulletin 4 ). 73. A vehicle inspector or inspecting organisation has certified a motor vehicle under Land Transport Rule: Vehicle Standards Compliance 2002 and they had reason to believe that the vehicle did not comply with this Rule. 74. During the certification of a vehicle, compliance of a vehicle's brakes with the performance requirements in this Rule has not been verified by means of appropriate tests, using

brake of a vehicle first registered in New Zealand on or after 1 March 2007 or modified on or after that date that can be operated in a combination vehicle is not capable of being connected to the air brake of the other vehicle by means of a two-line system. 26. A two-line system does not consist of: a) a supply line that supplies compressed air from the towing to the towed vehicle, and b) a control line that supplies a control signal, in the form of modulated air pressure, to regulate