2020 National Deflectograph Accreditation Trial

Published: Mar 2022

ISBN: 978-1-913246-93-8

Author: Stuart Brittain

Pages: 36

Reference: PPR977


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A key element for the successful maintenance of a road network is accurate, reliable and consistent survey data. To this aim, Highways England commissions annual accreditation trials for the Deflectograph devices by ongoing QA for the devices. In order to undertake accredited surveys, the survey devices are required to meet the mandatory criteria of the trial.

This report covers the 2020 accreditation trial run by TRL and held on the HORIBA-MIRA proving ground between 10th and 11th of March 2020.

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