Heavy Vehicle National Law
National Class 1 Load Carrying Vehicle Mass Exemption Notice 2025 (No.1)
This notice provides mass exemptions, conditions of access and networks for eligible vehicles transporting an indivisible item, but that do not meet regulation mass limits.
This notice may be cited as the National Class 1 Load Carrying Vehicle Mass Exemption Notice 2025 (No.1).
This notice commences on 1 May 2025.
This notice expires on 30 April 2030.
Closed quad-axle group (also denoted as “4 @ 1.2”) means a group of:
Closed quin-axle group (also denoted as “5 @ 1.2”) means a group of:
Closed tandem axle group (also denoted as “2 @ 1.2”) means a group of:
Closed tri-axle group (also denoted as “3 @ 1.2”) means a group of:
Ground contact width means the distance between the outermost points of ground contact of the outside tyres on each end of an axle.

Figure 1: Illustration of ground contact width of an axle
MDL Regulation means the Heavy Vehicle (Mass, Dimension and Loading) National Regulation.
Spread quad-axle group (also denoted as “4 @ 1.2, 2.4, 1.2”) means a group of 4 axles, where:
Spread tandem axle group (also denoted as “2 @ 1.8”) means a group of:
Spread tri-axle group means a group of:
Note: The exemptions in this notice are subject to conditions set out in Schedule 8 of the MDL Regulation applying to Class 1 heavy vehicles.
network means a map or stated route, including a list or database, presented either electronically or otherwise, that represents the stated areas and stated routes authorised under this notice.
Jose Arredondo
Manager Network Access Policy
National Heavy Vehicle Regulator
The provisions in this schedule only apply in the Australian Capital Territory.
Table 1 - Mass limits for 8-tyred single axle or tandem axle group low loader dolly
Minimum dolly ground contact width (m) | Single axle dolly 8 tyres per axle (t) | Tandem axle dolly 8 tyres per axle (t) |
2.4 | 12.0 | 21.0 |
2.6 | 13.0 | 21.0 |
2.8 | 14.0 | 22.0 |
3.0 | 16.0 | 24.0 |
3.2 | 17.0 | 26.0 |
3.4 | 18.0 | 27.0 |
3.6 | 18.0 | 28.0 |
3.8 | 18.0 | 30.0 |
4.0 | 18.0 | 31.0 |
4.2 | 18.0 | 32.0 |
4.4 | 18.0 | 33.0 |
≥4.5 | 18.0 | 33.5 |
Table 2 - Mass limits for low loader axle groups
Minimum axle group ground contact width (m) | Number and spacing of axles in axle group (spacing in metres) | ||||
2 @ 1.2 2 @ 1.8 | 3 @ 1.2 | 3 @ 1.8 3 @ 1.2, 2.4 3 @ 2.4, 1.2 | 4 @ 1.2 | 4 @ 1.2, 2.4, 1.2, or 5 @ 1.2 | |
4 tyred axle mass limit (t) | |||||
2.4 | 18.5 | 25 | 27 | 30 | 35 |
8 tyred axle mass limit (t) | |||||
2.4 | 21 | 25 | 27 | 30 | 35 |
2.6 | 21 | 26 | 29 | 31.5 | 36 |
2.7 | 21 | 27 | 31 | 33 | 37 |
2.8 | 22 | 28 | 33 | 34 | 39 |
2.9 | 22 | 29 | 34 | 35 | 40 |
3.0 | 24 | 30 | 36 | 36 | 41 |
3.1 | 24 | 31 | 37 | 37 | 42 |
3.2 | 26 | 32 | 39 | 39 | 43 |
3.3 | 26 | 33 | 40 | 40 | 44 |
3.4 | 27 | 34 | 41 | 41 | 46 |
3.5 | 27 | 35 | 42 | 42 | 47 |
3.6 | 28 | 36 | 43 | 43 | 48 |
3.7 | 28 | 37 | 44 | 44 | 49 |
3.8 | 30 | 38 | 45 | 45 | 50 |
3.9 | 30 | 39 | 46 | 46 | 51 |
4.0 | 31 | 40 | 47 | 47 | 52 |
4.1 | 31 | 40 | 48 | 48 | 53 |
4.2 | 31 | 40 | 48 | 49 | 54 |
4.3 | 32 | 41 | 49 | 50 | 55 |
4.4 | 33 | 42 | 50 | 51 | 56 |
4.5 | 34 | 43 | 51 | 52 | 57 |
Note: The ACT Load Carrying Vehicles Stated Routes and Areas document is published on the NHVR website.
An eligible vehicle operating under this notice must comply with the Pilot and Escort Conditions set out in Part 6 of the ACT Additional Conditions Booklet, as amended from time to time.
Note: The ACT Additional Conditions Booklet is published on the NHVR website.
The provisions in this schedule only apply in New South Wales.
Operator’s Guide means the New South Wales Class 1 Load Carrying Vehicle Operator’s Guide as published by the National Heavy Vehicle Regulator, as amended from time to time.
Table 1 - Mass limits for 8-tyred single axle or tandem axle group low loader dolly
Minimum dolly ground contact width (m) | Single axle dolly 8 tyres per axle (t) | Tandem axle dolly 8 tyres per axle (t) |
2.4 | 12.0 | 21.0 |
2.6 | 13.0 | 21.0 |
2.8 | 14.0 | 22.0 |
3.0 | 16.0 | 24.0 |
3.2 | 17.0 | 26.0 |
3.4 | 18.0 | 27.0 |
3.6 | 18.0 | 28.0 |
3.8 | 18.0 | 30.0 |
4.0 | 18.0 | 31.0 |
4.2 | 18.0 | 32.0 |
4.4 | 18.0 | 33.0 |
≥4.5 | 18.0 | 33.5 |
Table 2 - Mass limits for low loader axle groups
Minimum axle group ground contact width (m) | Number and spacing of axles in axle group (spacing in metres) | ||||
2 @ 1.2 2 @ 1.8 | 3 @ 1.2 | 3 @ 1.8 3 @ 1.2, 2.4 3 @ 2.4, 1.2 | 4 @ 1.2 | 4 @ 1.2, 2.4, 1.2, or 5 @ 1.2 | |
4 tyred axle mass limit (t) | |||||
2.4 | 18.5 | 25 | 27 | 30 | 35 |
8 tyred axle mass limit (t) | |||||
2.4 | 21 | 25 | 27 | 30 | 35 |
2.6 | 21 | 26 | 29 | 31.5 | 36 |
2.7 | 21 | 27 | 31 | 33 | 37 |
2.8 | 22 | 28 | 33 | 34 | 39 |
2.9 | 22 | 29 | 34 | 35 | 40 |
3.0 | 24 | 30 | 36 | 36 | 41 |
3.1 | 24 | 31 | 37 | 37 | 42 |
3.2 | 26 | 32 | 39 | 39 | 43 |
3.3 | 26 | 33 | 40 | 40 | 44 |
3.4 | 27 | 34 | 41 | 41 | 46 |
3.5 | 27 | 35 | 42 | 42 | 47 |
3.6 | 28 | 36 | 43 | 43 | 48 |
3.7 | 28 | 37 | 44 | 44 | 49 |
3.8 | 30 | 38 | 45 | 45 | 50 |
3.9 | 30 | 39 | 46 | 46 | 51 |
4.0 | 31 | 40 | 47 | 47 | 52 |
4.1 | 31 | 40 | 48 | 48 | 53 |
4.2 | 31 | 40 | 48 | 49 | 54 |
4.3 | 32 | 41 | 49 | 50 | 55 |
4.4 | 33 | 42 | 50 | 51 | 56 |
4.5 | 34 | 43 | 51 | 52 | 57 |
NSW Oversize Overmass Load Carrying Vehicles Network Approved Roads
An eligible vehicle must only travel on a route specified in section 7 of this schedule for that category of vehicle and in accordance with any condition, including any restriction on the hours or days of operation, specified in the Operator’s Guide or the relevant network map.
The provisions in this schedule only apply in Queensland.
Low loader means a semitrailer with a loading deck no more than 1.2m above the ground.
Overall axle spacing of a drive - dolly combination means the horizontal distance between the centre of the leading drive axle of the prime mover and the centre of the rearmost axle of the dolly in a prime mover - dolly combination.
Queensland Access Conditions Guide means the Queensland Access Conditions Guide published by the Queensland Government.
Queensland Excess Mass and Dimension Conditions means the route and area conditions, and including the Conditions of Operation Database, maintained and published by on the TMR website.
TMR means the Queensland Department of Transport and Main Roads.
Table 1 - Mass limits for prime mover steer axle or steer axle group
Steer axle | Mass(t) |
Single steer | 6.0 |
Complying steer axle | 6.5 |
Euro VI vehicle (complying steer axle) | 6.5 |
Twin steer axle group without load sharing | 10 |
Twin steer axle group with load sharing | 11 |
Euro VI vehicle twin steer |

Figure 1: Illustration of Distance “A”.

Figure 2: Single Axle Dolly Measurement Guide

Figure 3: Tandem Axle Dolly Measurement Guide
The mass on an axle group of a trailer or dolly must not be more than the mass limit stated in Table 2, for the stated axle group configuration and minimum axle group ground contact width specified.
Table 2 - Mass limits for trailers including dollies
Minimum axle group ground contact width (m) | Number and spacing of axles in axle group (spacing in metres) | |||||
1 | 2 @ 1.2 2 @ 1.8 | 3 @ 1.2 | 3 @ 1.8 3 @ 1.2, 2.4 3 @ 2.4, 1.2 | 4 @ 1.2 | 4 @ 1.2, 2.4, 1.2 | |
| 4 tyred axle mass limit (t) | |||||
2.4 | 9 | 18.5 | 25 | 27 | 30 | 35 |
| 8 tyred axle mass limit (t) | |||||
2.4 | 12 | 21 | 25 | 27 | 30 | 35 |
Note: The conditions in this section are maintained and published by the Queensland Government on its websites.
An eligible vehicle combination carrying a special purpose vehicle or agricultural vehicle may also carry up to 1t of additional equipment, tools, substances, or detached parts to be used in conjunction with the vehicle being carried.
Note: Examples of items covered in this section include blades, buckets, or rippers.
The provisions in this schedule only apply in South Australia.
Operator’s Guide means the South Australia Load Carrying Vehicle’s Operator’s Guide as published by the NHVR, as amended from time to time.
Spread quin-axle group (also denoted as “5 @ 1.8”) means a group of 5 axles at least 1.8m apart.
The mass of an eligible vehicle must not be more than 100t.
Table 1: Mass limits for a tandem axle dolly and prime mover
Minimum dolly ground contact width (m) | Minimum overall axle spacing (m) | ||||||||
3.6 | 3.8 | 4.0 | 4.2 | 4.4 | 4.6 | 4.8 | 5.0 | 5.2 + | |
Maximum sum of drive axle and tandem axle dolly mass limit (t) | |||||||||
4 tyred axle mass limit (t) | |||||||||
2.4 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 |
8 tyred axle mass limit (t) | |||||||||
2.4 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 |
2.6 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 |
2.8 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 |
3 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 |
3.2 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 |
3.4 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 |
3.6 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 |
3.8 | 35.5 | 36.5 | 37.5 | 38.5 | 40 | 41 | 42 | 43 | 44 |
4 | 35.5 | 37 | 38 | 39 | 40.5 | 42 | 43 | 44 | 45 |
4.2 | 35.5 | 37 | 38 | 39.5 | 41 | 43 | 44 | 45 | 46 |
4.4 | 35.5 | 37 | 38 | 39.5 | 41.5 | 44 | 45 | 46 | 47 |
Note: The 'overall axle spacing' in Table 1 is the distance from the centre of the first axle in the drive axle group to the centre of the last axle in the dolly group shown in Figure 1.

Figure 1 - Overall axle spacing measurement guide
Table 2 – Mass limits of low loader axle groups
Minimum axle group ground contact width (m) | Number and spacing of axles in axle group (spacing in metres) | |||
3 @ 1.2 | 3 @ 1.8 | 4 @ 1.2 | 4 @ 1.2, 2.4, 1.2 or 5 @ 1.2 or 5 @ 1.8 | |
4 tyred axle mass limit (t) | ||||
2.4 | 25 | 27 | 30 | 35 |
8 tyred axle mass limit (t) | ||||
2.4 | 25 | 27 | 30 | 35 |
2.6 | 26 | 29 | 31.5 | 36 |
2.7 | 27 | 31 | 33 | 37.5 |
2.8 | 28 | 33 | 34 | 39 |
2.9 | 29 | 34.5 | 35 | 40 |
3.0 | 30 | 36 | 36 | 41 |
3.1 | 31 | 37.5 | 37.5 | 42 |
3.2 | 32 | 39 | 39 | 43.5 |
3.3 | 33 | 40 | 40 | 44.5 |
3.4 | 34 | 41 | 41 | 46 |
3.5 | 35 | 42 | 42 | 47 |
3.6 | 36 | 43 | 43 | 48 |
3.7 | 37 | 44 | 44 | 49 |
3.8 | 38 | 45 | 45 | 50 |
3.9 | 39 | 46 | 46 | 51 |
4.0 | 40 | 47 | 47 | 52 |
4.1 | 40 | 48 | 48 | 53 |
4.2 | 40 | 48 | 49 | 54 |
4.3 | 40 | 48 | 49 | 55 |
4.4 | 40 | 48 | 49 | 56 |
Table 3: Networks for eligible vehicles
Column 1 | Column 2 | |||
Width (m) | Length (m) | Height (m) | Mass (t) | Network |
2.5 | 23 | 4.6 | 42.5 | 23m 42.5t Low Loader 24 hr 23m 42.5t Low Loader day only |
3.5 | 25 | 5.0 | 59.5 | 25m 59.5t Low Loader |
4.0 | 30 | 5.0 | 100 | 4.0m Wide Load Carrying Vehicle |
4.6 | 30 | 5.0 | 100 | 4.6m Wide Load Carrying Vehicle |
Note: Although this section references dimension limits, dimension exemptions are not provided by this notice. The references to dimension are intended to identify the networks and assist in operating with the National Class 1 Load Carrying Vehicle Dimension Exemption Notice, which uses the same networks.
The provisions in this schedule only apply in Victoria.
Table 1 - Mass limits for low loader axle groups
Minimum axle group ground contact width (m) | Number and spacing of axles in axle group (spacing in metres) | ||||
2 @ 1.8 | 3 @ 1.2 | 3 @ 1.8
| 4 @ 1.2 | 4 @ 1.2, 2.4,1.2 | |
4 tyred axle mass limit (t) | |||||
2.4 | 21.5 | 25 | 27 | 30 | 35 |
8 tyred axle mass limit (t) | |||||
2.5 | 21.5 | 25.0 | 27.0 | 30.0 | 35.0 |
2.6 | 23.0 | 26.0 | 29.0 | 31.5 | 36.0 |
2.7 | 24.0 | 27.0 | 31.0 | 33.0 | 37.5 |
2.8 | 25.0 | 28.0 | 33.0 | 34.0 | 39.0 |
2.9 | 26.0 | 29.0 | 34.5 | 35.0 | 40.0 |
3.0 | 27.0 | 30.0 | 36.0 | 36.0 | 41.0 |
3.1 | 28.0 | 31.0 | 37.5 | 37.5 | 42.0 |
3.2 | 29.0 | 32.0 | 39.0 | 39.0 | 43.5 |
3.3 | 30.0 | 33.0 | 40.0 | 40.0 | 44.5 |
3.4 | 30.5 | 34.0 | 41.0 | 41.0 | 46.0 |
3.5 | 31.0 | 35.0 | 42.0 | 42.0 | 47.0 |
3.6 | 31.5 | 36.0 | 43.0 | 43.0 | 48.0 |
3.7 | 32.0 | 37.0 | 44.0 | 44.0 | 49.0 |
3.8 | 33.0 | 38.0 | 45.0 | 45.0 | 50.0 |
3.9 | 33.5 | 39.0 | 46.0 | 46.0 | 51.0 |
4.0 | 34.0 | 40.0 | 47.0 | 47.0 | 52.0 |
4.1 | 34.0 | 40.0 | 48.0 | 48.0 | 53.0 |
4.2 | 34.0 | 40.0 | 48.0 | 49.0 | 54.0 |
4.3 | 34.0 | 40.0 | 48.0 | 50.0 | 55.0 |
4.4 | 34.0 | 40.0 | 48.0 | 51.0 | 56.0 |
4.5 | 34.0 | 40.0 | 48.0 | 52.0 | 57.0 |
4.6 | 34.0 | 40.0 | 48.0 | 52.5 | 57.5 |
The axle spacing for an eligible vehicle as measured from the centre of the last dolly axle, or from the centre of the last drive axle when there is no dolly, to the centre of the first trailer axle (see Figure 1 and 2 below) must be no less than the corresponding values in Table 2.
Note: See below for Tables 2, 3 and 4.

Figure 1 - Last drive axle to first trailer axle measurement guide

Figure 2 - Last dolly axle to first trailer axle measurement guide
For a prime mover towing a single axle dolly, the combined mass on the drive axle group and the dolly axle must be no more than the corresponding value in Table 3.
Note: See below for Tables 2, 3 and 4.

Figure 3 - Overall axle spacing measurement guide – dual-drive tandem axle group and single axle dolly
For a prime mover towing a tandem axle dolly, the combined mass on the drive axle group and the dolly axle group must be no more than the corresponding value in Table 4.
Note: See below for Tables 2, 3 and 4.

Figure 4 - Overall axle spacing measurement guide – dual-drive tandem axle group and tandem axle dolly
Table 2- Drive/dolly axle group to trailer axle group – minimum distance (m)
Dolly axle group | No dolly | Single axle dolly | Tandem axle dolly | |||||||||||
Trailer axle group configuration | 2 @ 1.2, 2 @ 1.8 | 3 @ 1.2 | 3 @ 1.8 | 4 @ 1.2 | 4 @ 1.2, 2.4, 1.2 | 3 @ 1.2 | 3 @ 1.8 | 4 @ 1.2 | 4 @ 1.2, 2.4, 1.2 | 3 @ 1.2 | 3 @ 1.8 | 4 @ 1.2 | 4 @ 1.2, 2.4, 1.2 | |
All 4 tyred trailers | 6.0 | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 8.20 | 7.50 | 7.80 | 8.40 | 8.70 | |
8 tyred trailers – ground contact width (m) | 2.5 | 6.75 | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 8.20 | 7.50 | 8.65 | 9.25 | 9.70 |
2.6 | 6.30 | 7.00 | 7.20 | 7.20 | 7.40 | 7.25 | 7.40 | 7.35 | 7.45 | 7.65 | 8.95 | 9.50 | 9.80 | |
2.7 | 6.00 | 7.00 | 7.35 | 7.43 | 7.60 | 7.23 | 7.68 | 7.65 | 8.63 | 7.65 | 9.25 | 9.63 | 9.90 | |
2.8 | 6.00 | 7.00 | 7.50 | 7.50 | 7.80 | 7.20 | 7.95 | 7.80 | 8.80 | 7.65 | 9.55 | 9.60 | 10.00 | |
2.9 | 6.00 | 7.00 | 7.65 | 7.65 | 8.00 | 7.40 | 8.23 | 8.15 | 9.05 | 7.65 | 9.63 | 9.58 | 9.95 | |
3.0 | 6.00 | 7.00 | 7.80 | 7.80 | 8.20 | 7.60 | 8.50 | 8.50 | 9.30 | 7.65 | 9.70 | 9.55 | 9.90 | |
3.1 | 6.00 | 7.00 | 7.90 | 7.90 | 8.33 | 7.65 | 8.70 | 8.80 | 9.40 | 7.65 | 9.85 | 9.75 | 9.93 | |
3.2 | 6.00 | 7.00 | 8.00 | 8.00 | 8.60 | 7.70 | 8.90 | 9.10 | 9.65 | 7.65 | 10.00 | 9.95 | 10.10 | |
3.3 | 6.00 | 7.00 | 8.10 | 8.10 | 8.73 | 7.83 | 8.95 | 9.25 | 9.78 | 7.73 | 10.00 | 10.00 | 10.15 | |
3.4 | 6.00 | 7.00 | 8.20 | 8.20 | 9.00 | 7.95 | 9.00 | 9.40 | 10.05 | 7.80 | 10.15 | 10.20 | 10.50 | |
3.5 | 6.00 | 7.00 | 8.20 | 8.20 | 9.00 | 7.88 | 8.93 | 9.33 | 9.93 | 7.88 | 10.15 | 10.20 | 10.50 | |
3.6 | 6.00 | 7.00 | 8.20 | 8.20 | 9.00 | 7.80 | 8.85 | 9.25 | 9.90 | 7.95 | 10.15 | 10.20 | 10.50 | |
3.7 | 5.98 | 7.00 | 8.20 | 8.20 | 9.00 | 7.80 | 8.78 | 9.18 | 9.88 | 8.03 | 10.23 | 10.28 | 10.50 | |
3.8 | 6.00 | 7.00 | 8.20 | 8.20 | 9.00 | 7.95 | 8.85 | 9.25 | 9.90 | 8.10 | 10.45 | 10.50 | 10.65 | |
3.9 | 6.00 | 7.00 | 8.20 | 8.20 | 9.00 | 8.03 | 8.85 | 9.25 | 9.90 | 8.25 | 10.53 | 10.58 | 10.73 | |
4.0 | 6.00 | 7.00 | 8.20 | 8.20 | 9.00 | 8.10 | 8.85 | 9.25 | 9.90 | 8.40 | 10.60 | 10.65 | 10.80 | |
4.1 | 6.00 | 7.00 | 8.35 | 8.20 | 9.00 | 7.88 | 8.93 | 9.33 | 9.90 | 8.33 | 10.75 | 10.80 | 10.88 | |
4.2 | 6.00 | 7.00 | 8.20 | 8.20 | 9.00 | 7.65 | 8.70 | 9.40 | 9.90 | 8.25 | 10.60 | 10.95 | 10.95 | |
4.3 | 6.00 | 7.00 | 8.20 | 8.20 | 9.00 | 7.50 | 8.40 | 9.40 | 9.90 | 8.10 | 10.45 | 11.10 | 11.10 | |
Table 3 - Dual-drive tandem axle group and single axle dolly mass limits
|
| Minimum drive/dolly group spacing (m) | ||||||||||||
| 2.8 | 2.9 | 3.0 | 3.1 | 3.2 | 3.3 | 3.4 | 3.5 | 3.6 | 3.7 | 3.8 | 3.9 | 4.0 | |
Mass limit (t) | ||||||||||||||
4- tyred dolly axles | 25.0 | 25.5 | 26.0 | 26.5 | 27.0 | 27.0 | 27.0 | 27.0 | 27.0 | 27.0 | 27.0 | 27.0 | 27.0 | |
8-tyred dolly – ground contact width (m) | 2.5 | 25.0 | 25.5 | 26.0 | 26.5 | 27.0 | 27.5 | 28.0 | 28.5 | 29.0 | 29.5 | 30.0 | 30.0 | 30.0 |
2.6 | 26.0 | 26.5 | 27.0 | 27.5 | 28.0 | 28.5 | 29.0 | 29.5 | 30.0 | 30.5 | 31.0 | 31.0 | 31.0 | |
2.7 | 26.5 | 27.0 | 27.5 | 28.0 | 28.5 | 29.0 | 29.5 | 30.0 | 30.5 | 31.0 | 31.5 | 31.5 | 31.5 | |
2.8 | 27.0 | 27.5 | 28.0 | 28.5 | 29.0 | 29.5 | 30.0 | 30.5 | 31.0 | 31.5 | 32.0 | 32.0 | 32.0 | |
2.9 | 27.5 | 28.0 | 28.5 | 29.0 | 29.5 | 30.0 | 30.5 | 31.0 | 31.5 | 32.0 | 32.5 | 32.5 | 32.5 | |
3.0 | 28.0 | 28.5 | 29.0 | 29.5 | 30.0 | 30.5 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.0 | 34.0 | |
3.1 | 28.5 | 29.0 | 29.5 | 30.0 | 30.5 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 33.5 | 34.5 | |
3.2 | 29.0 | 29.5 | 30.0 | 30.5 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.0 | 35.0 | |
3.3 | 29.5 | 30.0 | 30.5 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 34.5 | 35.5 | |
3.4 | 30.0 | 30.5 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.0 | 35.0 | 36.0 | |
3.5 | 30.5 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.0 | 35.5 | 35.5 | 36.0 | |
3.6 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.0 | 35.5 | 36.0 | 36.0 | 36.0 | |
3.7 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.0 | 35.5 | 36.0 | 36.0 | 36.0 | |
3.8 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.5 | 36.0 | 36.5 | 36.5 | 36.5 | |
3.9 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.5 | 36.0 | 36.5 | 36.5 | 36.5 | |
4.0 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.5 | 36.0 | 36.5 | 36.5 | 36.5 | |
4.1 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.5 | 36.0 | 36.5 | 36.5 | 36.5 | |
4.2 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.5 | 36.0 | 36.5 | 36.5 | 36.5 | |
4.3 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.5 | 36.0 | 36.5 | 26.5 | 36.5 | |
Table 4 – Dual-drive tandem axle group and tandem axle dolly mass limits
| Minimum drive/dolly group spacing (m) | |||||||||||||||||||||||||
3.6 | 3.7 | 3.8 | 3.9 | 4.0 | 4.1 | 4.2 | 4.3 | 4.4 | 4.5 | 4.6 | 4.7 | 4.8 | 4.9 | 5.0 | 5.1 | 5.2 | 5.3 | 5.4 | 5.5 | 5.6 | 5.7 | 5.8 | 5.9 | 6.0 | ||
Mass limit (t) | ||||||||||||||||||||||||||
4--tyred dolly axles | 29.0 | 29.5 | 30.0 | 30.5 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.0 | 35.5 | 36.0 | |||||||||||
8-tyred dolly – ground contact width (m) | 2.5 | 29.0 | 29.5 | 30.0 | 30.5 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.5 | 35.5 | 36.0 | 36.5 | 37.0 | 37.5 | 38.0 | 38.5 | 39.0 | 39.0 | 39.5 | 39.5 | 40.0 |
2.6 | 30.0 | 30.5 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.0 | 35.5 | 36.0 | 36.5 | 37.0 | 37.5 | 38.0 | 38.5 | 39.0 | 39.5 | 40.0 | 40.0 | 40.5 | 40.5 | 41.0 | |
2.7 | 30.5 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.0 | 35.5 | 36.0 | 36.5 | 37.0 | 37.5 | 38.0 | 38.5 | 39.0 | 39.5 | 40.0 | 40.5 | 40.5 | 41.0 | 41.0 | 41.5 | |
2.8 | 31.0 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.0 | 35.5 | 36.0 | 36.5 | 37.0 | 37.5 | 38.0 | 38.5 | 39.0 | 39.5 | 40.0 | 40.5 | 41.0 | 41.0 | 41.5 | 41.5 | 42.0 | |
2.9 | 31.5 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.0 | 35.5 | 36.0 | 36.5 | 37.0 | 37.5 | 38.0 | 38.5 | 39.0 | 39.5 | 40.0 | 40.5 | 41.0 | 41.5 | 41.5 | 42.0 | 42.0 | 42.5 | |
3.0 | 32.0 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.0 | 35.5 | 36.0 | 36.5 | 37.0 | 37.5 | 38.0 | 38.5 | 39.0 | 39.5 | 40.0 | 40.5 | 41.0 | 41.5 | 42.0 | 42.0 | 42.5 | 42.5 | 43.0 | |
3.1 | 32.5 | 33.0 | 33.5 | 34.0 | 34.5 | 35.0 | 35.5 | 36.0 | 36.5 | 37.0 | 37.5 | 38.0 | 38.5 | 39.0 | 39.5 | 40.0 | 40.5 | 41.0 | 41.5 | 42.0 | 42.5 | 42.5 | 43.0 | 43.0 | 43.5 | |
3.2 | 33.0 | 33.5 | 34.0 | 34.5 | 35.0 | 35.5 | 36.0 | 36.5 | 37.0 | 37.5 | 38.0 | 38.5 | 39.0 | 39.5 | 40.0 | 40.5 | 41.0 | 41.5 | 42.0 | 42.5 | 43.0 | 43.0 | 43.5 | 43.5 | 44.0 | |
3.3 | 33.5 | 34.0 | 34.5 | 35.0 | 35.5 | 36.0 | 36.5 | 37.0 | 37.5 | 38.0 | 38.5 | 39.0 | 39.5 | 40.0 | 40.5 | 41.0 | 41.5 | 42.0 | 42.5 | 43.0 | 43.5 | 43.5 | 44.0 | 44.0 | 45.0 | |
3.4 | 34.0 | 34.5 | 35.0 | 35.5 | 36.0 | 36.5 | 37.0 | 37.5 | 38.0 | 38.5 | 39.0 | 39.5 | 40.0 | 40.5 | 41.0 | 41.5 | 42.0 | 42.5 | 43.0 | 43.5 | 44.0 | 44.5 | 45.0 | 45.0 | 45.5 | |
3.5 | 34.5 | 35.0 | 35.5 | 36.0 | 36.5 | 37.0 | 37.5 | 38.0 | 38.5 | 39.0 | 39.5 | 40.0 | 40.5 | 41.0 | 41.5 | 42.0 | 42.5 | 43.0 | 43.5 | 44.0 | 44.5 | 45.0 | 45.5 | 45.5 | 46.0 | |
3.6 | 35.0 | 35.5 | 36.0 | 36.5 | 37.0 | 37.5 | 38.0 | 38.5 | 39.0 | 39.5 | 40.0 | 40.5 | 41.0 | 41.5 | 42.0 | 42.5 | 43.0 | 43.5 | 44.0 | 44.5 | 45.0 | 45.5 | 46.0 | 46.0 | 46.5 | |
3.7 | 35.0 | 35.5 | 36.0 | 36.5 | 37.0 | 37.5 | 38.0 | 38.5 | 39.5 | 40.0 | 40.5 | 41.0 | 41.5 | 42.0 | 42.5 | 43.0 | 43.5 | 44.0 | 44.5 | 45.0 | 45.5 | 46.0 | 46.5 | 46.5 | 47.0 | |
3.8 | 35.5 | 36.0 | 36.5 | 37.0 | 37.5 | 38.0 | 38.5 | 39.0 | 40.0 | 40.5 | 41.0 | 41.5 | 42.0 | 42.5 | 43.0 | 43.5 | 44.0 | 44.5 | 45.0 | 45.5 | 46.0 | 46.5 | 47.0 | 47.5 | 48.0 | |
3.9 | 35.5 | 36.0 | 36.5 | 37.5 | 37.5 | 38.0 | 38.5 | 39.0 | 40.0 | 40.5 | 41.5 | 42.0 | 42.5 | 43.0 | 43.5 | 44.0 | 44.5 | 45.0 | 45.5 | 46.0 | 46.5 | 47.0 | 47.5 | 48.0 | 48.5 | |
4.0 | 35.5 | 36.0 | 37.0 | 37.5 | 38.0 | 38.5 | 39.0 | 39.5 | 40.5 | 41.0 | 42.0 | 42.5 | 43.0 | 43.5 | 44.0 | 44.5 | 45.0 | 45.5 | 46.0 | 46.5 | 47.0 | 47.5 | 48.0 | 48.5 | 49.0 | |
4.1 | 35.5 | 36.0 | 37.0 | 37.5 | 38.0 | 38.5 | 39.0 | 39.5 | 40.5 | 41.5 | 42.5 | 43.0 | 43.5 | 44.0 | 44.5 | 45.0 | 45.5 | 46.0 | 46.5 | 47.0 | 475 | 48.0 | 48.5 | 49.0 | 49.5 | |
4.2 | 35.5 | 36.0 | 37.0 | 37.5 | 38.0 | 38.5 | 39.5 | 40.0 | 41.0 | 42.0 | 43.0 | 43.5 | 44.0 | 44.5 | 45.0 | 45.5 | 46.0 | 46.5 | 47.0 | 47.5 | 48.0 | 48.5 | 49.0 | 49.5 | 50.0 | |
4.3 | 35.5 | 36.0 | 37.0 | 37.5 | 38.0 | 38.5 | 39.5 | 40.0 | 41.0 | 42.0 | 43.5 | 44.0 | 44.5 | 45.0 | 45.5 | 46.0 | 46.5 | 47.0 | 47.5 | 48.0 | 48.5 | 49.0 | 49.5 | 50.0 | 50.5 | |
STEP 1: Subtract the required drive/dolly axle group to trailer axle group distance in Table 4 by the vehicle’s actual drive/dolly axle group to trailer axle group distance;
STEP 2: Divide this figure by 0.3 and round it up to the next whole tonnes.
To determine the total vehicle combination mass:
STEP 3: For a prime mover and low loader trailer, add the sum of the steer axle, dual-drive tandem axle group and trailer axle group mass and subtract the mass limit adjustment from step 4; or
STEP 4: For a prime mover, dolly and low loader trailer, add the sum of the steer axle, the drive/dolly axle group mass from step 1 and the trailer axle group mass from step 2.
STEP 5: Then subtract the mass limit adjustment from step 4.
Victoria Oversize & Overmass (OSOM) network.
The operator of a load-carrying vehicle must comply with the Pilot and escort vehicles in mountainous areas web page published by Transport Victoria and amended from time to time.