Getting third-party approval to travel
In addition to a permit from the National Heavy Vehicle Regulator (NHVR), operators of over-size or over-mass vehicles also require third-party approvals prior to travel.

Third parties are the owners or operators of assets that heavy vehicles travel on, over or under. Third parties include toll-road operators, rail-asset managers, telecommunications providers and utility companies.
There are different triggers for approval depending on your vehicle’s mass and dimensions and the conditions of access the third party imposes.
It is the operator’s responsibility to contact the relevant third party to determine if approval is required. The following information is intended to provide initial guidance and should be confirmed when contacting the third party.
Below is a list of key third party assets, and the approval process that applies.