National Class 1 Agricultural Vehicle and Combination Mass and Dimension Exemption Notice

National Class 1 Agricultural Vehicle and Combination Mass and Dimension Exemption Notice 2020 (No.1) | PDF, 828KB

This notice exempts eligible agricultural vehicles and combinations from certain mass and dimension requirements of the Heavy Vehicle National Law and Heavy Vehicle (Mass, Dimension and Loading) National Regulation, and other certain requirements of the Heavy Vehicle (Vehicle Standards) National Regulation, and places conditions on their operation in designated Agricultural Heavy Vehicle Zones.

The notice works in conjunction with an operator’s guide, an appendix of road manager conditions and an online map that outlines operating conditions that are not prescribed or specified in the notice.

The notice was developed in partnership with industry, participating state and territory road transport authorities and local road managers to provide better road access to agricultural vehicles. The notice was based on research conducted by Austroads and VicRoads respectively.

Speed limits - Tow mass ratio and brake performance testing

The National Class 1 Agricultural notice states speed limits for certain agricultural combinations. The speeds limits are based on the tow mass ratio between the hauling unit and the trailer. 

If an operator cannot determine the mass of the vehicles to calculate the tow mass ratio, then a simple braking test can be performed. 

Refer to Tow Mass Ratios for Agricultural Vehicles (PDF, 234KB) for the maximum operating speed for agricultural combinations and examples of tow mass ratio.

What is tow mass ratio

Tow mass ratio means the ratio of the mass of the towing vehicle (agricultural machine) to the combined mass of the towed implements and trailers, when all vehicles are coupled as part of a combination.  

The mass of the vehicle, implements and trailers include any load being carried. 

Note: When calculating tow mass ratio operators should weigh units of the combination when coupled, the mass of individual units may change when coupled to another vehicle, as mass can distribute across towed units in the combination.

Confirm your tow mass ratio on the Tow Mass Ratio Calculator (XLSX, 17KB).

What is brake performance testing 

A braking performance test is an alternate method to establish agricultural combinations speed limits when operating under the National Class 1 Agricultural notice.

A braking performance test is optional, and operators may choose to complete a brake performance test or comply with the tow mass ratio and speed limits in the notice, as described on page 6 of the operators guide.  

Upon successful completion of the braking performance test, (a description of the test is located on page 58 of the operator’s guide), the testing operator must complete the declaration form on page 60 of the operators guide. The driver of the tested agricultural combination must keep a copy of the declaration in the driving compartment of the agricultural machine when travelling.

Note: The braking performance test does not authorise the driver to exceed:

  • manufacturer ratings
  • road rule requirements
  • mass limits or exempt road manager conditions within the notice.

Current state agricultural vehicle notices

There are currently three states that provide notices authorising the use of agricultural vehicles and combinations. 

Operators must only operate under the National Class 1 Agricultural notice or the current state notices for the entire journey. No ‘mix-and-match’ of provisions, exemptions, conditions or approved areas and routes are allowed. 

The jurisdictional notices remain in effect until the state agricultural notice has been revoked. 

Special information for Victoria 

Zone 2 widths have been increased under the National Class 1 Agricultural notice from 3.5m to 3.7m.  

Zones 1, 3 and 4 will not be affected by the National Class 1 Agricultural notice and will remain the same as the existing Victoria Class 1 Agricultural Vehicle Exemption Notice 2018

All conditions of access provided by Victorian road managers have been transitioned into the Victoria Class 1 Agricultural Vehicle Exemption Notice 2018 and reflected in the Victorian Oversize and Overmass Agricultural vehicles Network for class 1 Vehicles map

This map is updated by the Victorian Department of Transport regularly.

State Notice
Qld

Queensland Agricultural Machines and Cane Bins Flotation Tyres Mass Exemption Notice 2017 (No. 1) (PDF, 1.2MB)

This notice provides jurisdictional access to agricultural machines and cane bin trailers fitted with flotation tyres to operate on roads in certain circumstances. Operators must carry this notice.


Queensland Class 1 Comb Trailer Dimension Exemption Notice 2017 (No. 1) (PDF, 742KB)

This notice provides jurisdictional access to agricultural machines or heavy vehicle towing a comb trailer that complies with Australian Design Rules (ADRs) from stated dimension requirements and agricultural speed limits. Operators must carry a copy of this notice.

SA

South Australia Class 1 Agricultural Vehicle Mass and Dimension Exemption Notice 2019 (No.1) (PDF, 667KB)

Provides jurisdictional access for tractors agricultural machines and agricultural combinations used for agricultural purposes that exceed a dimension or mass limit in South Australia.

Please note the following supporting documents for this notice:


South Australia Class 1 Rubber Tracked Tractor Mass and Dimension Exemption Notice 2019 (No.1) (PDF, 684KB)

Exempts rubber tracked tractors used for agricultural purposes from certain mass and dimension exemptions under the Heavy Vehicle National Law and allows access to roads in South Australia subject to the conditions specified in the notice.

Please note the following supporting documents for this notice:

Vic

Victoria Class 1 Agricultural Vehicle Exemption Notice 2018 (No.3) (PDF, 777KB)

This notice exempts certain agricultural vehicles from mass and dimension requirements.

Please note the following supporting document for this notice:

Expiring or expired jurisdictional agricultural notices

The NHVR will commence the revocation process affecting the notices listed in the table below. This means the notices will be ineffective 28 days after the NHVR publishes the revocation advice for each listed jurisdictional notice.

Operators are advised to review the conditions of access for the National Class 1 Agricultural notice before the date of expiry or revocation is completed. Where the vehicle or combination is unable to comply with the notice, the operator will need to apply for a permit. 

State Notice
New South Wales
  • New South Wales Class 1 Agricultural Machine Combination Exemption Notice 2017
  • New South Wales Class 1 Agricultural Vehicles (Notice) 2015
  • New South Wales Class 1 Heavy Vehicle Combine Harvester Combination Exemption Notice 2015
  • New South Wales Class 1 Heavy Vehicle Grain Auger Combination Exemption Notice 2015
Queensland
  • Queensland Class 1 Agricultural Vehicle (Coastal Zone 1) Dimension Exemption Notice 2016
  • Queensland Class 1 Agricultural Vehicle (Northern Coastal Zone 1) Dimension Exemption Notice 2016
  • Queensland Class 1 Heavy Vehicles (Cotton Harvester) Mass and Dimension Exemption Notice 2017 (No.1)
  • Queensland Heavy Vehicle Class 1 Agricultural Vehicle (Bundaberg Region 5.0m wide)
Tasmania
  • Tasmania Class 1 Agricultural Vehicle Dimension Exemption Notice 2016

What happens if I already have a permit that refers to an expired notice?

Operators should check existing permits to ensure the full journey is approved by either the permit or an active notice.  

A new permit is required if the existing permit does not cover the full journey and refers to an expired notice. This is where a route commences or ends at a network of a revoked notice and the combination does not comply with the National Class 1 Agricultural notice.  

If you need a permit, you will have to submit a new access permit application through the NHVR Portal