ATTIKO METRO S.A.
	Greek Ministry of Infrastructure, Transport & Networks
	Athens Urban Transport Organization (OASA)
	Hellenic Thermal Busses
	Athens Pireus Electric railways (ISAP)
	Athens Pireus Electric Buses (ILPAP)
	TRAM S.A.
	Suburban railway
	Interurban busses (KTEL) of Attica
	Hellenic railways Organization (OSE)
	Athens International Airport - Eleftherios Venizelos
	International Association of Public Transport (UITP)