contracting authoritiesmeans contracting authorities as defined in point 1 of Article 2(1) of Directive 2014/24/EU and in Article 3 of Directive 2014/25/EU;
contracting entitiesmeans contracting entities as defined in Article 4 of Directive 2014/25/EU;
road transport vehiclemeans a vehicle of category M or N, as defined in points (a) and (b) of Article 4(1) of Regulation (EU) 2018/858;
zero-emission heavy duty vehiclemeans a clean vehicle as defined in point 4(b) of this Article without an internal combustion engine, or with an internal combustion engine that emits less than 1 g CO2/kWh as measured in accordance with Regulation (EC) No 595/2009 of the European Parliament and of the Council and its implementing measures, or that emits less than 1 g CO2/km as measured in accordance with Regulation (EC) No 715/2007 of the European Parliament and of the Council and its implementing measures.