Joined Cases C-412/17 and C-474/17: Judgment of the Court (Second Chamber) of 13 December 2018 (request for a preliminary ruling from the Bundesverwaltungsgericht — Germany) — Bundesrepublik Deutschland v Touring Tours und Travel GmbH (C-412/17), Sociedad de Transportes SA (C-474/17) (Reference for a preliminary ruling — Area of freedom, security and justice — Regulation (EC) No 562/2006 — Community Code on the rules governing the movement of persons across borders (Schengen Borders Code) — Articles 20 and 21 — Abolition of internal border controls in the Schengen area — Checks within the territory of a Member State — Measures having an effect equivalent to border checks — Rules of a Member State requiring a coach travel operator on routes crossing the internal borders of the Schengen area to check passengers’ passports and residence permits — Penalty — Threat to impose a recurring fine)