ARCHIVE: Noise and Nuisance - Research Reports
Converting the UK Traffic Noise index LA10, 18h to EU noise indices for noise mapping
In the UK, the environmental assessment of road traffic noise is normally based on the procedures described in the publication 'Calculation of Road Traffic Noise' (CRTN) (except for new or altered roads for this purpose of the Noise insulation (Scotland) Regulations 1975). The noise index derived from this prediction method is different from the indices proposed by the EU. A decision has to be made therefore whether to attempt to adapt the CRTN method to produce the required noise indices or whether to adopt the proposed French method or a similar new method in the UK for noise mapping purposes.
In order to inform this decision Defra and the devolved administrations commissioned TRL to examine the options available. The options are discussed in this report.
Documents are available as follows:
- Main report (PDF 940 KB)
- Summary of conversion method (PDF 90 KB) (see main report for details)
- 2006 revised methodology (PDF 154 KB) - published June 2006
Page last modified 16 June 2006
Page published 4 July 2002