To that end, measures for the reduction of air pollution by engines to be installed in non-road mobile machinery were established by Directive 97/68/EC of the European Parliament and of the Council [3].
Chun na críche sin bunaíodh bearta le truailliú aeir ó innill atá le suiteáil in innealra soghluaiste nach innealra bóthair é le Treoir 97/68/CE ó Pharlaimint na hEorpa agus ón gComhairle [3].