| Resumo: | Rendering at the European Directive 2002/49/EC, all EU members have to draw up a strategic noise map for all agglomerations with more than 250,000 inhabitants and for all major airports, roads and railways. A study of environmental impact assessment on motorway A23 in the stretch between Castelo Branco–Alcains (Portugal), based in the impact of the environmental noise, allowed the modeling the noise variation, which can be useful for establishing mitigation measures. The results show that noise model can be a useful tool for the monitoring noise impact in surrounding of motorways.
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