In 2014, the Australian Road Research Board (ARRB) acquired a Traffic Speed Deflectometer (TSD) manufactured by Greenwood Engineering. It was then upgraded by ARRB, making it the first integrated road surface and sub-surface condition assessment system in the world. This device is known as the iPAVE system. Since then, the TSD has been conducting annual network surveys in Queensland, New South Wales, Western Australia and New Zealand.
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