54First of all, it should be noted that Article 25 of the Schengen Borders Code, which is set out, together with Articles 26 to 35, in Chapter II of Title III thereof, relating to the temporary reintroduction of border control at EU internal borders, lays down the general framework governing such reintroduction where there is a serious threat to public policy or internal security in a Member State and prescribes inter alia maximum periods within which such border control may be reintroduced. In particular, under Article 25(1) of that code, a Member State may exceptionally reintroduce such border control for a limited period of up to 30 days or for the foreseeable duration of that threat if its duration exceeds 30 days. In all cases, the duration of the temporary reintroduction of border control is not to exceed what is strictly necessary to respond to the threat. Under Article 25(3), if the threat persists, the Member State may prolong such border control for renewable periods of up to 30 days. Finally, whilst, under Article 25(4), the total period during which such border control is reintroduced – including any prolongation provided for under Article 25(3) – is not to exceed six months, Article 25(4) specifies that that total period may be extended to two years in the exceptional circumstances referred to in Article 29 of that code.
Source: EUR-Lex, © European Union, 1998-2026. Reuse authorised under Decision 2011/833/EU.