Oversize light vehicle restrictions
Find out where you can drive your oversize light vehicle, and requirements you must meet.
Class O over dimensional permit
You need a light vehicle over dimensional permit if your vehicle:
- exceeds the dimension limits (see below)
- requires an exemption from a condition stated in the regulations.
To apply:
- download the light vehicle over dimensional permit application form
- upload the completed form at VicRoads and pay for your permit online.
If you’re carrying a load on a truck or a car, you must comply with overhang limits.
Dimension limits
Oversize light vehicles need to follow certain rules in Victoria.
An oversize light vehicle, also known as a class O vehicle, is any car, boat or vehicle combination that exceeds either:
- 4.3 metres high
- 2.5 metres wide
- 12.5 metres long for a rigid vehicle
- 19 metres long for a combination.
They can be no more than:
- 4.6 metres high
- 3.5 metres wide
- 25 metres long.
Common examples include:
- boat trailers
- trailers or trucks carrying agricultural implements (like conveyors and augers)
- those towing an oversize trailer.
- Trucks must follow rules around heavy vehicle access and routes.
Conditions and requirements
Class O vehicles can use most Victorian roads. The table below lists exceptions where some, or all, Class O vehicles are prohibited.
| Area | Prohibited Class O vehicle |
|---|---|
| Mountainous Area and the Otway Area | Vehicles over 2.5 metres wide or 19 metres long |
| Gippsland Ranges Area and Colac-Surf Coast Area | Vehicles over 3 metres wide or 22 metres long |
| Main roads | Class O agricultural vehicle and agricultural combination |
| Restricted routes | All Class O vehicles |
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, which includes a layer called ‘Victoria’s Class 1 Oversize and Overmass Agricultural Vehicle network map’ where vehicles can and can’t drive.
- Victoria’s specification of areas, routes, and times at which certain class O vehicles may be used.
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 us.
To get an exemption you’ll need a report from an approved vehicle assessment signatory scheme engineer.