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    <copyright>Copyright © 2026. National Academy of Sciences. All rights reserved.</copyright>
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    <managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor>
    <webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster>
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      <title>NOISE OUTSIDE HOMES IN ENGLAND</title>
      <link>https://trid.trb.org/View/54513</link>
      <description><![CDATA[Noise measurements made outside of a random sample of homes in England were intended to be representative of environmental conditions in the country.  Average noise levels were distributed almost normally with a standard deviation of about 8db(a).  No significant differences were found between the regions of England except for the London area which was found to be some 7db(a) noisier compared with other regions.  Outside of London, average noise levels varied with population density, average traffic flow and distance from the nearest road.  The quietest homes in London experienced average noise levels some 8db(a) higher than the quietest homes in other areas although the noisiest London homes were not found to be noisier than the noisiest homes elsewhere. /TRRL/]]></description>
      <pubDate>Thu, 16 Feb 1978 00:00:00 GMT</pubDate>
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      <title>NOISE AND ROAD TRAFFIC OUTSIDE HOMES IN ENGLAND</title>
      <link>https://trid.trb.org/View/55284</link>
      <description><![CDATA[Noise and road traffic measurements have been made at a random selection of homes in England, stratified both by geographic region and population density.  The sample was representative of the home conditions of the adult population of England.  Average noise levels at the homes were distributed approximately in a Gaussian distribution with a standard deviation of about 8 db(a).  The distribution of the logarithm of 24 hour traffic flow was also approximately Gaussian with a standard deviation of 0.75.  A comparison with traffic census data indicated that flows in residential roads were lower than average.  The data showed no significant noise differences between the regions of England except for London which was about 7 db(a) noisier on average than the other regions.  Outside London, average noise levels varied systematically with population density and this variation could be explained almost completely by variations in average traffic flow and distance to the road.  Even after allowance had been made for the higher traffic flows in London, sound levels were about 6 db(a) noisier than in the other conurbations.  No London homes were found with levels of l10 (18 hour) below 50 db(a) whereas in the other conurbations approximately 25 per cent of homes experienced these levels.  This difference was attributed to the effect of major traffic routes in London and could explain the high levels measured there. (A)]]></description>
      <pubDate>Mon, 30 Jan 1978 00:00:00 GMT</pubDate>
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