Section 3(1) of the Principal Act is amended as follows:

(a) by inserting the following definition before the definition of ancillary certificate :

ADR means a national standard under the Motor Vehicle Standards Act 1989 of the Commonwealth, as amended and in force from time to time;

(b) by inserting the following definition after the definition of driver licence receipt :

escort vehicle means a vehicle that is being used –

(a) to transport a police officer or an authorised officer; and

(b) to warn other road users of the presence of an oversize vehicle or combination;

(c) by inserting the following definition after the definition of manufacturer :

mass includes weight;

(d) by inserting the following definitions after the definition of nominated configuration :

overmass means having a mass, including any load, that exceeds a prescribed mass limit under this Act;

oversize means having a dimension, including any load, that exceeds a prescribed dimension limit under this Act;

(e) by inserting the following definition after the definition of passenger vehicle :

pilot vehicle means a vehicle that –

(a) is being used to warn other road users of the presence of an oversize vehicle or combination; and

(b) is not an escort vehicle;

(f) by inserting the following definition after the definition of short term unregistered vehicle permit :

speed limiting device means a device that –

(a) prevents a vehicle from being driven on a level road at more than 100 kilometres an hour; and

(b) complies with ADR 65 for speed limiting devices, issued by the Commonwealth Department of Transport and Regional Services;

(g) by inserting the following definition after the definition of vehicle registration authority :

weighing device means a weighbridge or a portable weighing device;

(h) by omitting "trolley." from the definition of wheelchair and substituting "trolley;" ;

(i) by inserting the following definition after the definition of wheelchair :

wheel load means the mass transmitted to a road by the tyre of a vehicle wheel.