Public Domain Transition SBTA 21-005

The Public Domain Transition, SBTA 21-005 was developed by Austroads to provide a smooth, snag-free connection between steel guardrail barriers and rigid concrete barrier.

The Austroads design considers successful transition testing performed by the Midwest Roadside Research Facility (MwRSF) at the University of Nebraska. Whilst crash testing of the Austroads design demonstrated differing vehicle stability to the MwRSF transition, Austroads decided to recommend a transition that incorporated local components that was close to the design used by MwRSF.


Crash test evaluations:

  • 2270kg Pick-up Truck travelling at 100km/h & 25 degrees (MASH 3-21).

Austroads acceptance:

“Our Company undertakes the repair of existing and installation of new guardrail and pedestrian fencing in the Sydney region.

We use Safe Direction for the supply of the hardware. They are the very best in my view, timely, well organised, conscientious, very easy to deal with and the prices are reasonable.

Orders are ready to pick up in a short time which helps our business because we receive jobs at short notice and need hardware at short notice. Thanks for your help over the years Safe Direction we really appreciate your efforts.”

John Hunt – Hunt Civil P/L

“Safe Direction provides a fantastic service with prompt communication and extensive knowledge of their products and the required specifications.

I would highly recommend Safe Direction for any Roadside or Carpark Barrier enquiries.”


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