SCRIM®
The original - and still the standard
Complete Visibility and Control of Your Highway Assets
Innovated by WDM and trusted worldwide, SCRIM® is the benchmark for measuring wet road skid resistance. Designed for network-scale surveys, it delivers continuous, accurate data to help highway authorities manage risk, prioritise resurfacing, and meet national safety standards.
Built and supported exclusively by W.D.M. Limited, SCRIM® meets BS 7941-1:2006 and is certified to AASHTO 143 and ISO 9001:2015. It remains the most widely adopted system of its kind – setting the standard for road safety performance across the UK, Europe, Asia, and Australasia.
Built for accurate, repeatable friction data
- Continuous side-force measurement using a 20° angled test wheel
- Operates at 25–85 km/h, with target speeds of 50 or 80 km/h
- Up to 300 km of survey coverage per day
- Mid-mounted test wheel simulates real-world surface interactions
- Speed-corrected friction data processed onboard in real time
- Captures IRI, GPS, video, geometry, and texture in a single pass
- Equipped with dynamic vertical load and water flow control systems
- Water tank capacities range from 850–2,400 gallons depending on spec
- Complies with BS 7941-1:2006, AASHTO 143, ISO 9001:2015
Integrated performance: SCRIMTEX®
Every SCRIM® can be fitted with SCRIMTEX® – a macrotexture measurement enhancement that builds on SCRIM®’s friction capabilities.
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Supports dual-wheel path measurement in double-sided setups
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Includes integrated air and surface temperature sensing
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Provides deeper insight into road surface safety and condition
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Fully integrated with WDM’s analysis and reporting tools
Where SCRIM® delivers value
- Network-wide skid resistance monitoring
- Annual safety and compliance assessments
- Identifying high-risk sections at bends, approaches, and junctions
- Monitoring treatment effectiveness over time
- Supporting scheme justification and public safety reporting
Insights + opinion
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Speak to a Product Specialist
Need support choosing the right SCRIM® setup for your fleet or region?
Our team can help you specify, configure, and deploy SCRIM® with confidence – including support with data integration, fleet planning, training, and servicing.
