The exercise of the powers, conferred by this Directive on NCAs, including the investigative powers, should be subject to appropriate safeguards which at least comply with the general principles of Union law and the Charter of Fundamental Rights of the European Union, in accordance with the case law of the Court of Justice of the European Union, in particular in the context of proceedings which could give rise to the imposition of penalties.
Ba cheart feidhmiú na gcumhachtaí, lena n-áirítear na cumhachtaí imscrúdaitheacha, a thugtar trí bhíthin na Treorach seo do ÚINanna a bheith faoi réir coimircí cuí a chomhlíonann ar a laghad caighdeáin phrionsabail ghinearálta dhlí an Aontais agus an Chairt um Chearta Bunúsacha an Aontais Eorpaigh, i gcomhréir le cásdlí Chúirt Bhreithiúnais an Aontais Eorpaigh, go háirithe i gcomhthéacs na nósanna imeachta a d'fhéadfadh a bheith ina gcionsiocair le forchur pionós.