Judgment of the Court (Fourth Chamber) of 21 March 2019.#Rhein-Sieg-Kreis v Verkehrsbetrieb Hüttebräucker GmbH and BVR Busverkehr Rheinland GmbH and Rhenus Veniro GmbH & Co. KG v Kreis Heinsberg.#Requests for a preliminary ruling from the Oberlandesgericht Düsseldorf.#Reference for a preliminary ruling — Transport — Public passenger transport services by rail and by road — Regulation (EC) No 1370/2007 — Article 5(1) and (2) — Direct award – Contracts for public passenger transport services by bus and tram — Conditions — Directive 2004/17/EC — Directive 2004/18/EC.#Joined Cases C-266/17 and C-267/17.