Parts or equipment that may pose a serious risk to the correct functioning of systems that are essential for the safety of the vehicle or for its environmental performance shall not be placed on the market, shall not enter into service, and shall be prohibited, unless they have been authorised by an approval authority in accordance with Article 56.
Páirteanna nó trealamh a d'fhéadfadh a bheith ina riosca tromchúiseach do dhea-fheidhmiú córas atá fíor-riachtanach ó thaobh shábháilteacht nó fheidhmíocht chomhshaoil na feithicle de, ní dhéanfar iad a chur ar an margadh, ní chuirfear iad i seirbhís, agus déanfar iad a thoirmeasc, ach amháin má tá siad údaraithe ag údarás ceadaithe i gcomhréir le hAirteagal 56.