Appendix 1: The environmental capacity of streets

Non-residential access streets

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In the case of non-residential access streets the time at our disposal did not enable us to examine a sufficiently large sample of streets to apply the method used for residential streets, nor even to check whether it was likely to have any applicability. We content ourselves with describing briefly six case studies which we found instructive in the formulation of our ideas and values, and which we hope, by relating traffic flows to specific street conditions, will give some impression, however rough, of the environmental capacity of certain kinds of non-residential streets. In three instances, however, with the co-operation of the Scientific Adviser to the London County Council, we secured sound-level recordings over a 24-hour period, and we were able to compare these with the recommendations in the Report of the Committee on the Problem of Noise (Wilson Report).