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il-ħoss li joħroġ mill-vetturi għandu jitkejjel permezz ta' meter tal-livell tal-ħoss tat-tip deskritt fil-pubblikazzjoni 179, l-ewwel edizzjoni (1965), tal-kummissjoni internazzjonali elettroteknika.
the noise emitted by vehicles shall be measured by means of a sound-level meter of the type described in publications 179,1st edition (1965), of the international electrotechnical commission.