This article describes the types of noise barrier used on the Continent, and compares them with those currently in use in the United Kingdom. Barrier designs in Germany, Holland and France were considered. The study shows that the methods of sound level prediction and measurement, and the standards laid down for both measuring noise and alleviating it in continental legislation or guidance notes are surprisingly similar to those provided in the United Kingdom. The main difference lies in the method of interpreting requirements and in the method of achieving the final design of the noise barrier. The Dutch for example have developed the use of colours in barrier design in urban areas. The use of darker colours at the base of the barrier for example is effective in reducing the apparent weight of the structure. All three countries placed emphasis on absorbent surfaces and low noise transmission. Another difference is the willingness of continental authorities to accept and pay for the required standards. Once the decision has been made to protect certain areas by erecting high noise barriers, there is direct consultation with the public and considerable care is taken to select the type of barrier best suited to the neighbourhood. There was general agreement between all responsible bodies that noise insulation of the buildings themselves was not always the best solution, and this is one reason why these spend so much more on noise barriers than the United Kingdom.
Abstract