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According to the European Directive 2002/49/EC, EU members have to draw up a strategic noise map for all agglomerations with more than 250000 inhabitants and for all major airports, roads and railways. A study of environmental impact assessment on Highway A23 in the stretch between Abrantes пїЅ Guarda, conducted under the environmental noise, has as objective the characterization of the current situation, i.e. representation of senses in sound levels surrounding the infrastructure, based on modelling and acoustic ...