3Interpretation

3 Interpretation

In these regulations –

Act means the Vehicle and Traffic Act 1999 ;

ADR (Definitions and Vehicle Categories) means the Vehicle Standard (Australian Design Rule – Definitions and Vehicle Categories) 2005 made under the MVSA;

aggregate axle load, in relation to a vehicle or combination, means the sum of the axle loads of all the axles of the vehicle or combination;

axle group means a single axle group, tandem axle group, twinsteer axle group, tri-axle group or quad-axle group;

axle load, in relation to a vehicle, means the sum of the wheel loads in respect of all the wheels on an axle or axle group of that vehicle;

centre line means –

(a) in respect of an axle –

(i) if the axle consists of one shaft, a line parallel to the length of the axle and passing through the centre of the axle; or

(ii) if the axle consists of 2 shafts, a line in the vertical plane passing through –

(a) the centre of both shafts; and

(b) the centres of the wheels on the shafts;

(b) in respect of an axle group –

(i) if the group consists of 2 axles, one of which is fitted with twice the number of tyres as the other axle, a line located one-third of the way from the centre-line of the axle with more tyres towards the centre-line of the axle with fewer tyres; and

(ii) in any other case, a line located midway between the centre-lines of the outermost axles of the group;

converter dolly means a light trailer with one axle group or a single axle, and a fifth wheel coupling, designed to convert a semi-trailer into a dog trailer;