The temporary reintroduction of border control at certain internal borders under a specific Union-level procedure could also be justified in the case of exceptional circumstances and as a measure of last resort where the overall functioning of the area without internal border control is put at risk as a result of persistent serious deficiencies relating to external border control identified in the context of a rigorous evaluation process in accordance with Articles 14 and 15 of Regulation (EU) No 1053/2013, where those circumstances would constitute a serious threat to public policy or internal security in that area or in parts thereof.
I gcúinsí eisceachtúla d’fhéadfadh údar cuí freisin bheith le hathbhunú sealadach rialaithe teorann ag teorainneacha inmheánacha áirithe faoi nós imeachta sonrach ar leibhéal an Aontais agus mar bheart a dhéanfaí mar rogha dheiridh i gcás ina ndéantar feidhmiú foriomlán an limistéir gan rialú ag teorainneacha inmheánacha a chur i mbaol mar thoradh ar easnaimh leanúnacha thromchúiseacha maidir le rialú ag teorainneacha seachtracha arna sainaithint i gcomhthéacs dianphróiseas meastóireachta i gcomhréir le hAirteagal 14 agus le hAirteagal 15 de Rialachán (AE) Uimh. 1053/2013, i gcás ina mbeadh na cúinsí sin ina mbagairt thromchúiseach ar an mbeartas poiblí nó ar an tslándáil inmheánach laistigh den limistéar sin nó laistigh de chodanna de.