Road access and usage

Restrictions apply to the ways in which overdimension vehicles can access the road network, and also how the road network can be used for non-traffic activities.

Driving on the road network

To drive on the road network, vehicles need to be within certain weight and dimension limits. Vehicles outside these limits may require special permits, or must travel under conditions.


  • Light vehicles and combinations: Gross Vehicle Mass (GVM) or Aggregate Trailer Mass (ATM) not exceeding 4.5 tonnes
  • Heavy vehicles and combinations: GVM or an ATM of more than 4.5 tonnes.

Light vehicle exemptions

Heavy vehicle access information

Heavy vehicle operations are regulated under the Heavy Vehicle National Law and National Regulations by the National Heavy Vehicle Regulator (NHVR). The HVNL and Regulations took effect on 10 February 2014. To access the legislation as it applies in NSW go to the NSW Legislation website.

More information about heavy vehicle road access.

Using bridges and other structures for non-traffic activities

Roads and Maritime Services endeavours to support community access to bridges, roads and other structures, however there are conditions, and permission is required.

More information about using roads, bridges and other structures for non-traffic activities.

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