GAV - Common Rigid Truck and Trailer Combinations

General Access Vehicles (GAV) don't require a permit or notice to access road networks; these vehicles have as-of-right access to the network unless otherwise signposted. For a heavy vehicle to be considered a GAV, they must be within the size and weight range outlined below.

The following 2, 3 and 4 axle truck with a dog or pig trailer combinations are General Access Vehicles (GAVs) when complying with GML, CML and general dimensions described below.

Description Image Max Length
(metres)
Max Mass - GML
(tonnes)
Max Mass - CML
(tonnes)
2 Axle Truck and 2 Axle Dog Trailer General Access Vehicle - 2 axle truck with 2 axle dog trailer <19.0 30.0 CML does not apply to a single axle
2 Axle Truck and 2 Axle Pig Trailer General Access Vehicle - 2 axle truck with 2 axle pig trailer <19.0 30.0 CML does not apply to truck towing a pig trailer
3 Axle Truck and 2 Axle Dog Trailer General Access Vehicle - 3 axle truck with 2 axle dog trailer <19.0 40.5 41.0
3 Axle Truck and 2 Axle Pig Trailer General Access Vehicle - 3 axle truck with 2 axle pig trailer <19.0 37.5 CML does not apply to a truck towing a pig trailer
3 Axle Truck and 3 Axle Dog Trailer General Access Vehicle - 3 axle truck with 3 axle dog trailer <19.0 42.5 43.5
3 Axle Truck and 3 Axle Pig Trailer General Access Vehicle - 3 axle truck with 3 axle pig trailer <19.0 40.5 CML does not apply to a truck towing a pig trailer
3 Axle Truck and 4 Axle Dog Trailer General Access Vehicle - 3 axle truck with 4 axle dog trailer <19.0 42.5 43.5

In the above examples, a complying steer axle is permitted up to 6.5 tonnes on the steer axle provided it does not exceed the manufacturers rating. The allowable GVM/GCM may then also be increased by up to 0.5 tonnes but not exceed a total mass of 43t.

4 Axle Truck and 3 Axle Dog Trailer

 

General Access Vehicle - 4 axle truck with 3 axle dog trailer

<19.0 42.5 43.5
4 Axle Truck and 4 Axle Dog Trailer General Access Vehicle - 4 axle truck with 4 axle dog trailer <19.0 42.5 43.5

In the above examples, a twinsteer heavy vehicle fitted with load-sharing suspension system is permitted up to 11 tonnes on the steer axle provided it does not exceed the manufacturers rating and GCM of 42.5t.

 

Note: The mass of a dog trailer or pig trailer must not be more than the towing vehicle's mass.
Note: Combinations operating at Higher Mass Limits (HML) are considered a Restricted Access Vehicle (RAV) and must comply with the relevant state notice or permit conditions.