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CEEMA has successfully worked with TRL, for Wiltshire County Council, on a number of traffic safety engineering schemes, including interactive signing and route treatments. We have completed project managing the A346/A338 Swindon to Salisbury Route Study (Total cost of the scheme: approx £450k) 

This involved:
  • accident investigation and analysis
  • recommendation of accident remedial measures
  • analysis of traffic flow, the type of traffic and its movement patterns
  • re-signing and re-lining the route (approx 35 miles, involving approx 1000 warning, regulatory and direction signs)
  • implementation of accident remedial measures
  • arranging for authorisation and implementation of 25 interactive signs
  • production of regular information sheets to and attendance of meetings with the associated District and Parish Councils, MPs, County Councillor and other interested parties
  • CEEMA were awarded the contract to carry out similar work on the A342 between Devizes and Upavon for implementation by March 2003.

    Published Article:
    New Vehicle Activated Signs, VA for short, are being introduced on the A360 in West Lavington. VA signs have been used very successfully in Wiltshire for the past 4 years but the signs being installed on the A360 are unique in Wiltshire and only used in 2 other locations in the Country.

    Member of CEEMA Consulting Engineers, who was working closely with the County Council on this project, said:

     "Normally, vehicles which are travelling at a speed considered too fast for the hazard they are approaching will trigger off the VA signs, but in this case, it is vehicles travelling in the opposite direction which sets off the sign. Due to the nature of the road in West Lavington, poor visibility and very narrow, with widths of only 4 metres in some locations, it was considered more important to warn drivers that the section of road they were approaching had vehicles already in it and travelling towards them and that they should slow down."

    The signs work by vehicles going over loops cut into the surface of the road and activating the signs, the signs will stay on for approx 10 seconds, the time it takes for a vehicle to clear the narrow section of highway.

    Close monitoring will be carried out over the coming months to see how successful the project has been.

     A member of CEEMA said:
     "Speed is the biggest single factor in road crashes, responsible for over 1,000 deaths and 10,000 serious injuries in the UK every year. There is overwhelming evidence that lower speeds result both in fewer collisions and in reduced severity of collisions. One of the most powerful research findings of recent years has been that an increase in average speed of 1mph results in an average 5% increase in the total number of crashes. Correspondingly, a 1mph reduction in average speed results in an average 5% reduction in crashes. This means that even marginal reductions in average speeds can result in major road safety gains.

    Furthermore, in the UK, a reduction of just 2mph in average speeds could result in an annual saving of around 23,000 casualties nationally, including more than 200 deaths and 3,500 serious casualties. The cost benefit to society from such a reduction in casualties would be over £830 million per year.

    Globally, road crashes are becoming increasingly important as a cause of death and disability. World Health Organisation estimates, suggest that they are expected to be the second ranked cause of premature death by the year 2020."

    If you require any further information, please call Shane Charles on
    07976 121 842

    Civil Engineering & Environmental Management Associates
    Head Office: CEEMA Ltd, Willows Rise, 37 Hampton Lane, Solihull B91 2QD  t. 0121 705 7757     CEEMA Ltd © 2008