Class O (oversize light) vehicle restrictions
Find out where you can drive your oversize light vehicle, and requirements you must meet.
What is a Class O (oversize light) vehicle?
An oversized light vehicle, also known as a Class O vehicle, is any car, boat or vehicle combination where its load exceeds either:
- 4.3 metres high
- 2.5 metres wide
- 12.5 metres long for a rigid vehicle
- 19 metres long for a combination.
Do you need a Class O permit?
If you do not exceed the maximum limits below, access is approved on all roads under the authority of the Class O Notice, therefore a permit is not required:
- 4.6 metres high
- 3.5 metres wide
- 25 metres long
- 4.5 tonnes mass.
* Please note that the maximum oversize limits apply to the load on a vehicle.
You must apply for a Class O Permit if:
- Your light vehicle or combination exceeds the standard dimensions above
- You are transporting over-dimensional equipment (e.g. boats, farm machinery)
- You are travelling through an area with travel restrictions and exceed the specified dimensions (refer to the table under Travel Restrictions).
Note: An over-dimensional load rail permit may also be required when crossing railways and/or tramways.
If you’re carrying a load on a truck or a car, you must also comply with overhang limits.
Class O permits may contain conditions such as approved routes, travel times, and pilot vehicle requirements.
How to apply?
- Download the light vehicle over dimensional permit application form
- upload the completed form to VicRoads and pay for your permit online
- It will cost $80.20, and is
- Valid for 12 months.
Travel restrictions
Oversize light vehicles are not permitted on all roads. Specific routes are restricted due to safety, infrastructure, and environmental concerns.
Key restriction zones
| Area | Limits |
|---|---|
| Mountainous Area & Otway Areas | Width > 2.5 m or length > 19 m not permitted |
| Gippsland Ranges & Surf Coast | Width > 3.0 m or length > 22 m restricted |
| Urban or narrow arterial roads | Subject to route-specific bans and conditions |
For full details of Class O restrictions, including areas, routes and times, see:
- Schedule 6 of Victoria's road safety (vehicles) regulations 2021
- View the National Heavy Vehicle Regulator’s national network map. This includes a layer called ‘Victoria’s Class 1 oversize and overmass agricultural vehicle network map’ showing where vehicles can and can’t drive.
- Victoria’s specification of areas, routes, and times at which certain Class O vehicles may be used.
Special provisions and exemptions
Certain vehicles and trailers may operate under modified rules:
Field bins
Oversize light field bins can operate in Victoria’s broad-acre and flat areas without a pilot vehicle.
View a full list of conditions and restrictions.
Gliders and water sport devices
Trailers carrying gliders or water sport devices are exempt from standard rear overhang limits.
View a full list of conditions and restrictions.
Portable traffic signal trailers
Portable traffic signs are used to safely manage the traffic flow when part of a road (such as a single lane) is closed for repair. They can be joined together as a two-trailer unit.
Vehicles aren’t allowed to tow more than one trailer except:
- B-double trucks and road trains
- with an exemption from Department of Transport and Planning.
To get an exemption you’ll need a report from an approved vehicle assessment signatory scheme engineer.