Portaria n.º 86/81, de 20 de Janeiro de 1981
Portaria n.º 86/81 de 20 de Janeiro O ruído de tráfego rodoviário é, na generalidade dos casos, em meio urbano a fonte de ruído responsável por maior incomodidade.
A limitação deste ruído, se bem que possa e deva passar por medidas como o ordenamento do tráfego e a realização de obras de protecção, encontra na redução da emissão das fontes individuais a contribuição mais importante.
Surge assim, bem evidente, a conveniência e necessidade de ajustar criteriosamente e na medida compatível com as possibilidades de resposta tecnológica os valores fixados como limites para os níveis sonoros do ruído produzido pelos veículos com motor.
Atendendo a que estes veículos são utilizados, correntemente, fora dos países produtores, configura-se também a conveniência de estabelecer critérios de harmonização de técnicas de ensaio e de fixação de limites que sejam alargados a grandes espaços económicos e geográficos.
Existe uma norma portuguesa para caracterização do ruído emitido por veículos com motor, ensaiados em movimento, que segue a norma ISO n.º 362/1964 sobre a matéria e que está de acordo com a técnica de ensaio seguida nos países das comunidadeseuropeias.
A Portaria n.º 774/80, recentemente publicada, ao estabelecer um prazo de cinco anos para que os veículos já matriculados à data da sua publicação satisfaçam o estipulado nesse diploma, veio originar dificuldades ao exercício da acção fiscalizadora a que se torna necessário obviar.
Nestes termos: Manda o Governo da República Portuguesa, pelos Secretários de Estado do Ordenamento e Ambiente e dos Transportes, o seguinte: 1.º O n.º 2 do artigo 32.º do Regulamento do Código da Estrada, aprovado pelo Decreto n.º 39987, de 22 de Dezembro de 1954, passa a ter a redacção seguinte: ARTIGO 32.º Ciclomotores ................................................................................
2 - Nos ciclomotores, a eficácia do dispositivo silenciador deverá ser tal que o nível sonoro dos ruídos dos escapes dos motores, medido de acordo com a técnica de ensaio referida na normalização portuguesa ou outra equivalente estabelecida pela...
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