Transparency data

Open data: strategic noise mapping

Explaining which noise sources were included in the 2012 strategic noise mapping dataset.

Documents

Details

Defra has published strategic noise map data that give a snapshot of the estimated noise from major road and rail sources across England in 2012. The data was developed as part of implementing the Environmental Noise Directive.

This publication explains which noise sources were included in 2012 strategic noise mapping process. It provides summary maps for major road and rail sources and provides links to the detailed Geographic Information Systems (GIS) noise datasets.

This data will help transport authorities to better identify and prioritise relevant local action on noise. It will also be useful for planners, academics and others working to assess noise and its impacts.

Noise mapping Geographic Information Systems (GIS) datasets

Road noise

  • LAeq, 16h: indicates the annual average noise levels for the 16-hour period between 0700 – 2300.
  • Lden: indicates a 24 hour annual average noise level with separate weightings for the evening and night periods.
  • Lnight: indicates night time annual average noise level results in dB, where night is defined as 2300 - 0700.

Rail noise

  • LAeq,16h: indicates the annual average noise levels for the 16-hour period between 0700 – 2300.
  • Lden: indicates a 24 hour annual average noise level with separate weightings for the evening and night periods.
  • Lnight: indicates night time annual average noise level results in dB, where night is defined as 2300 - 0700.

Others

Noise exposure data

We’ve already published data which shows the estimated number of people affected by noise from road traffic, railway and industrial sources.

Published 12 August 2015
Last updated 13 August 2015 + show all updates
  1. Replaced document to fix minor inaccuracies in wording and added link to noise exposure data.
  2. First published.