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.
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Units: Metric (m)
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Car class: 1
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Unclassifiable vehicle class: 13
| Axles | Groups | Description | Class | Parameters | Dominant Vehicle | Aggregate | |
|---|---|---|---|---|---|---|---|
| 2 | 1 or 2 |
Short - Sedan, Wagon, 4WD, Utility, Light Van |
SV | 1 | d(1)>=1.7m, d(1)<=3.2m & axles=2 |
|
1 (Light) |
| 3, 4 or 5 | 3 |
Short Towing - Trailer, Caravan, Boat, etc. |
SVT | 2 | groups=3, d(1)>=2.1m, d(1)<=3.2m, d(2)>=2.1m & axles=3,4,5 |
|
|
| 2 | 2 | Two axle truck or Bus | TB2 | 3 | d(1)>3.2m & axles=2 |
|
2 (Medium) |
| 3 | 2 | Three axle truck or Bus | TB3 | 4 | axles=3 & groups=2 |
|
|
| >3 | 2 | Four axle truck | T4 | 5 | axles>3 & groups=2 |
|
|
| 3 | 3 |
Three axle articulated vehicle or Rigid vehicle and trailer |
ART3 | 6 | d(1)>3.2m, axles=3 & groups=3 |
|
3 (Heavy) |
| 4 | >2 |
Four axle articulated vehicle or Rigid vehicle and trailer |
ART4 | 7 |
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 |
ART5 | 8 |
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 |
ART6 | 9 | axles=6 & groups>2 or axles>6 & groups=3 |
|
|
| >6 | 4 |
B-Double B-Double or Heavy truck and trailer |
BD | 10 | groups=4 & axles>6 |
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|
| >6 | 5 or 6 |
Double road train or Heavy truck and two trailers |
DRT | 11 | groups=5 or 6 & axles>6 |
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| >6 | >6 |
Triple road train or Heavy truck and three trailers |
TRT | 12 | groups>6 & axles>6 |
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