Judgment of the Court (Fifth Chamber) of 21 December 2023.#SIA 'DOBELES AUTOBUSU PARKS' and Others v Iepirkumu uzraudzības birojs and VSIA 'Autotransporta direkcija'.#Request for a preliminary ruling from the Augstākā tiesa (Senāts).#Reference for a preliminary ruling – Transport – Public passenger transport services by rail and by road – Regulation (EC) No 1370/2007 – Article 1(1) – Article 2a(2) – Article 3(1) – Article 4(1) – Article 6(1) – Contract for the provision of public passenger transport services by bus – Procedure for awarding a public service contract – Open, transparent and non-discriminatory tendering procedure – Specifications – Amount of compensation granted by the competent national authority – Indexation limited in terms of time and categories of specific costs