4.7 Article

An environmental noise study in the city of Caceres, Spain

Journal

APPLIED ACOUSTICS
Volume 63, Issue 10, Pages 1061-1070

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/S0003-682X(02)00030-0

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An urban noise survey was conducted in the city of Caceres (Extremadura, Spain). In order to select the different points where measurements were to be taken, the streets were classified according to their use in communicating the different zones of the city. The four categories considered were all through roads (service roads were excluded): arterial roads outside the central zone, arterial roads in the central zone, other two-way roads connecting different zones, other one-way roads. The first two categories were found to be statistically indistinguishable, and together with the third had the highest noise levels-median Leq above 70 dB(A). The one-way roads were some 5 dB(A) quieter. Thus the sound levels in Caceres, a small city, are quite high, with 90% of our measurements surpassing an Leq of 65 dB(A) during working hours. Finally, relationships were established between the equivalent level, traffic flux, and the main noise level percentiles, with results in good agreement with those of other authors. We can also conclude that city noise can be usefully studied by classifying the streets according to their use. (C) 2002 Elsevier Science Ltd. All rights reserved.

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