What is environmental noise?

The loudness of sounds as perceived by human beings is normally measured in A-weighted decibels (dB(A)).

Environmental noise can be easily ignored at low levels, particularly in towns and cities where we are used to hearing some background traffic noise.

We are all responsible for the noise that we make, and some noise is caused directly and indirectly by how we live (for example, by people moving goods to shops for us to buy).

We have published maps for the busiest parts of Wales which use colour to show the loudness of road traffic, railway and industrial noise as calculated by computer models at ten-metre distances. They are referred to as noise maps, though they are really sound maps showing the average loudness in A- ...

The maps are created by computer modelling. The computer model is only as good as the data it is given and the assumptions that it makes. This limits the noise maps’ accuracy.

After the noise maps were published, the Environmental Noise Directive requires that we produce and implement environmental noise action plans. These plans aim to reduce noise levels where necessary and preserve environmental noise quality where it is good.

There is rarely a quick, easy and affordable solution to environmental noise problems. Where resources are available, the most appropriate action will vary from case to case.

Very few of us can avoid noisy environments altogether, but we can still benefit from opportunities to enjoy quiet surroundings. Better still are tranquil public open spaces which are not only quiet but also visually attractive, natural, easy to access and safe.

More information on environmental noise in England, Scotland and Northern Ireland is available on the following websites.