Oversize and overmass vehicles

Oversize and overmass vehicles may require pilots and escorts to operate on the road network.

Escorting guidelines for oversize and over mass vehicles (PDF 1.8 MB) specifies the requirements for pilot vehicles and escorts.

Oversize vehicles exceeding 4.6m in height require a high load permit issued by SA Power Networks.

Apply for a high load permit

Request a police escort for an over dimensional vehicle

Route survey form

Operators can use the Route Survey Form (PDF 349.3 KB) to help assess their route, although this form doesn't constitute or replace a comprehensive route assessment.

Permit based scheme

Export container excess mass

Operators can apply to the NHVR for a permit to transport shipping containers holding goods for export on articulated vehicles where the gross combination mass exceeds 42.5 tonnes.

The permit scheme to be selected is SA - Excess Mass Export.

Mass and dimension limits

  • The maximum allowable mass is 49.5 tonnes.
  • The maximum container length is 12.2 metres.

Note: vehicle height and width must align with the Heavy Vehicle (Mass, Dimension and Loading) National Regulation.

Travel limits and routes

Travel is only allowed within South Australia, and is limited to between the point of loading the container onto the articulated vehicle and the container terminal at Outer Harbour.

Conditions

Evidence that the goods are destined for export must be carried in the vehicle at all times, and be produced when requested by an authorised officer appointed under the Heavy Vehicle National Law, or a police officer.


Related information

On this site

      Contact National Heavy Vehicle Regulator

      Online

      Phone

      Phone - 13 NHVR (13 64 87)
      Fax - (07) 3309 8777

      Post

      PO Box 492
      Fortitude Valley QLD 4006


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      Page last updated 7 September 2026

      Provided by:
      Department for Infrastructure and Transport
      URL:
      https://www.sa.gov.au/topics/driving-and-transport/heavy-vehicles/operating-a-heavy-vehicle/oversize-and-overmass-vehicles
      Last Updated:
      07/09/26
      Printed on:
      24/09/26
      Copyright statement:
      SA.GOV.AU is licensed under a Creative Commons Attribution 4.0 Licence. © Copyright 2026
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