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AustRoads94

Austroads94 replaced NAASRA in Australia in 1994. It is an improved system using information from the spacings of the first three axles, the total number of axles and the number of axle groups. There are 13 classes.

  • Units: Metric (m)

  • Car class: 1

  • Unclassifiable vehicle class: 13

AxlesGroupsDescriptionClassParametersDominant VehicleAggregate
21 or 2

Short - Sedan, Wagon, 4WD, Utility, Light Van

SV1d(1)>=1.7m, d(1)<=3.2m & axles=2
1 (Light)
3, 4 or 53

Short Towing - Trailer, Caravan, Boat, etc.

SVT2groups=3, d(1)>=2.1m, d(1)<=3.2m, d(2)>=2.1m & axles=3,4,5
22Two axle truck or BusTB23d(1)>3.2m & axles=2
2 (Medium)
32Three axle truck or BusTB34axles=3 & groups=2
>32Four axle truckT45axles>3 & groups=2
33

Three axle articulated vehicle or Rigid vehicle and trailer

ART36d(1)>3.2m, axles=3 & groups=3
3 (Heavy)
4>2

Four axle articulated vehicle or Rigid vehicle and trailer

ART47

d(2)<2.1m or d(1)<2.1m or d(1)>3.2m

axles = 4 & groups>2

5>2

Five axle articulated vehicle or Rigid vehicle and trailer

ART58

d(2)<2.1m or d(1)<2.1m or d(1)>3.2m

axles=5 & groups>2

>=6>2

Six (or more) axle articulated vehicle or Rigid vehicle and trailer

ART69axles=6 & groups>2 or axles>6 & groups=3
>64

B-Double

B-Double or Heavy truck and trailer

BD10groups=4 & axles>6
>65 or 6

Double road train or Heavy truck and two trailers

DRT11groups=5 or 6 & axles>6
>6>6

Triple road train or Heavy truck and three trailers

TRT12groups>6 & axles>6