WDM USA Limited will provide continuous surface friction measurement survey services to American highway authorities from 2019, to help deliver safer roads and save lives. 

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RAV / Scanner Surveys

Road Assessment Vehicles (RAVs) carry out high speed data acquisition and recording of road surface conditions, including automatic recognition of surface cracking. This gives performance indicators to enable maintenance work to be prioritised and National Indicators to be calculated.


Deflectograph Surveys

Highway Authorities have used Deflectograph Surveys for more than 30 years to indicate the strength of their asphalt roads. By measuring the condition of all road layers, not just those that can be seen at the road surface, it’s possible to define the backlog and long term budget requirements needed to maintain the structural integrity of highway networks.


Visual Condition Surveys

WDM® is a major provider of Coarse Visual Inspection (CVI) surveys to local authorities. Its large team of fully certified and experienced surveyors use software and vehicles specifically designed to collect visual data, without the need for walked surveys. 


SCRIM® Surveys

Helping to lower accident rates by identifying where there is a risk of wet-road skidding. The introduction of regular SCRIM® machine surveys, together with a skid policy based on the current standards, offers a very cost effective option for local authorities to achieve and maintain reductions in their road casualty rates.


Multi Function Road Monitor (MRM)

The new design for the MRM makes it ideal for undertaking objective repeatable road condition surveys on minor narrow roads and in towns and cities. The original MRM is the forerunner of the RAV road survey vehicle and records all SCANNER defects except road cracking.

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