The Complete Management Solution

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The WDM® Lighting Management System (LMS) module has been designed to provide a complete solution for managing both planned and unplanned maintenance operations using the latest map based techniques. The system incorporates all Client and Contractor stages of the process and a comprehensive Secur...


WDM® is the sole licensed manufacturer worldwide of the SCRIM (Sideway-force Coefficient Routine Investigation Machine), working under license to the UK Transport Research Laboratory (TRL). The SCRIM is manufactured in full compliance with the current British Standard BS 7941-1:2006. The SCRIM he...

Pavement Management

The WDM® Pavement Management System (WDM® PMS) module provides a complete solution to pavement maintenance from input and processing of raw survey data through to treatment selection, budgeting and repair history. ...


Road Assessment Vehicles (RAVs) carry out high speed data acquisition and recording of 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. WDM® has been un...

Visual Condition Surveys

WDM® routinely undertake a wide range of visual condition surveys including: ukPMS Coarse Visual Inspection (CVI) WDM® is a major provider of CVI Surveys to Local Authorities. Its large team of fully certified and experienced surveyors use software and vehicles specifically designed to collect v...

Environmental Landscape

Capable of Operating within an integrated WDM® Highways Management System or as a stand alone data management module. Environmental Landscape Manager (ELM) enables the management of environmental inventory items, trees, verges, planted areas etc. It provides a simple map interface for data collec...


WDM® Structures Management System (SMS) module is available as a separate low cost standalone product but is also capable of operating within an integrated WDM® Management System to provide integration between Structures and Highways. SMS is a graphically based system designed to help the Enginee...

Customer Services

The WDM® Customer Services System module has been designed to control front line customer contact, e.g. call centre operations. The system allows an enquiry or complaint to be recorded and generates the required actions to ensure that enquiry receives a prompt response. An integrated Security Man...

ukPMS Module

Capable of operating as a component within the full WDM® Pavement Management System module, WDM® ukPMS Manager is also available as a separate standalone product designed to satisfy the requirement of Local Authorities to produce Audit Commission Performance Indicators at a low cost.

Routine Maintenance

The WDM® Routine Maintenance System (RMS) module has been designed to provide a complete solution for managing both Cyclic and Non-cyclic maintenance operations using the latest map based techniques. The system incorporates all Client and Contractor stages of the process and a comprehensive Secur...

  • Lighting

    Wednesday, 24 March 2010 16:15

    Wednesday, 24 March 2010 16:36
  • Pavement Management

    Thursday, 21 October 2010 10:20
  • RAV / SCANNER Surveys

    Thursday, 21 October 2010 07:10
  • Visual Condition Surveys

    Thursday, 27 May 2010 08:21
  • Environmental Landscape

    Friday, 22 October 2010 08:01
  • Structures

    Thursday, 21 October 2010 09:12
  • Customer Services

    Friday, 22 October 2010 08:10
  • ukPMS Module

    Thursday, 21 October 2010 10:13
  • Routine Maintenance

    Thursday, 21 October 2010 08:52
The Complete Management Solution

WDM® offers the complete asset management solution supported by unrivalled experience and technical expertise.

Already the UK’s leading manufacturer and provider of highway survey and monitoring equipment, with a unique understanding of highway maintenance and asset management, WDM® is also the UK’s largest survey contractor, serving all UK Government agencies and 90% of local authorities.

WDM® continues to develop pavement monitoring technology, set new industry standards and help clients and partners, both in the UK and overseas, achieve new levels of best practice.


4th Safer Roads Conference 2014


The 4th International Safer Roads Conference, which took place in May, 2014, in the UK, was a great success and helped break down divisions between agencies and specialisms involved in creating and maintaining road networks.

The Conference programme included papers from nine different countries by the police, medical doctors, traffic safety professionals and highway maintenance and asset management engineers; a truly significant cross section of those involved in producing safer roads. The keynote speakers from Holland, New Zealand, UK and USA were also inspirational.

They questioned the complacency generated by reducing headline accidents rates, while masking increases in deaths and serious injuries to the most vulnerable, and attitudes to road safety.  Responsibility needs to be shared - system designers and those who use the roads must jointly create a road system where crash forces do not cause death or serious injury.

The Conference was co-sponsored by W.D.M. Limited, New Zealand Transport Agency and the Chartered Institute of Highways and Transportation. Papers and presentations are available, free of charge on the Conference web-site, alongside the papers and presentations for the three earlier conferences. The 5th Safer Roads Conference will be held in New Zealand in 2017.


Roads to Success


The Daily Telegraph Business Club has commissioned an independent film profile of W.D.M. Limited, its approach as a company, how it’s evolved and developed and the factors behind its success. From its beginnings more than five decades ago W.D.M. Limited has focused its attention on listening closely and responding to the needs of its customers. It’s a simple formula, but one that is all too often overlooked as companies evolve and expand. Today the business specialises in designing equipment to monitor highways and pavements and to assess their maintenance needs.

W.D.M. Limited is widely recognised as a leader in its sector, providing services to most UK local authorities, and has reached this position by working closely with its clients to provide equipment and services that are genuinely invaluable. The Daily Telegraph film charts the company’s development and explains how it is working hard to develop the same close relationships with road engineers across the globe. Click here to view.




The TM2 brochure is available in various languages, use a flag to download your prefered choice:-

The updated TM2 surface texture meter with the latest electronics is the result of an extensive in-house research and development programme by WDM® to provide all the functionality of a routine texture measurement instrument, coupled with extensive analysis tools.

The TM2 is recognized as delivering the definitive macro texture measurement standard. The updated TM2 measures a broad swathe of the road profile transversely over a width of 100mm at very frequent intervals to build a detailed record of the surface, with its average texture depth, and delivers repeatable and consistent results.

It is widely recognised that pavement texture is an extremely important factor in the control of surface friction and subsequent road safety. It is also an important parameter for the determination of factors such as noise emission from vehicle tyres.



The main visitor reception is located @

W.D.M. Limited
Staple Hill House
Broad Street, Staple Hill
Bristol BS16 5LT

Google Map Location


W.D.M. Limited
North View, Staple Hill
Bristol BS16 4NX
Telephone: + 44 (0) 117 9567233
Facsimile: + 44 (0) 117 9570351


Southern Hemisphere

W.D.M. Limited
Unit 6/6 Northpoint Street
New Zealand
Telephone: +64 (0)4 2336221

W.D.M. is a registered trade mark of W.D.M. Limited.
© 2011 W.D.M. Limited.


W.D.M. Limited News

Saving Lives Through Safer Roads

WDM® has been surveying the road network annually in New Zealand since 1995, helping deliver remarkable reductions in road casualty rates and resulting in further developments of its SCRIM vehicle through the addition of the latest ITS programming.

Skid resistance of road surfaces is one of the primary factors that determine the safety of roads and the wet skid injury crash rate on road sections with “low” skid resistance is 4.5 to 9 times greater than that for all roads

Results of crash site analysis indicate that a 0.1 increase in skid resistance (measured in terms of Mean Summer SCRIM Coefficient, MSSC) causes a reduction in injury crashes of 30% on wet roads & 20% on dry roads for the New Zealand state highway network. Overall, since SCRIM surveys were introduced, the number of skid related fatalities in New Zealand has fallen by nearly 40%.

The social costs of crashes recorded in the New Zealand Transport Agency’s Economic Evaluation Manual (2010) are: rural fatal $3.881M, rural serious injury $680,000, rural minor injury $83,000.  By helping prevent 250 crashes the monetary benefits have been $159.5M.

Click here to see how New Zealand’s TV Channel, ONE News, reported the  survey operation.