2019 National Deflectograph Accreditation Trial

Published: Mar 2022

ISBN: 978-1-915227-02-7

Author: Stuart Brittain

Pages: 40

Reference: PPR1018

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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 supported 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 2019 accreditation trial run by TRL and held on the HORIBA-MIRA proving ground between 5th and 7th March 2019

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