any public or private undertaking licensed according to this Directive, the principal business of which is to provide services for the transport of goods and/or passengers by rail with a requirement t, a private or public undertaking which is authorised or licensed by applicable law to provide services for the transport of goods and/or passengers by rail with a requirement that the undertaking must , a licensed public or private transport operator which provides services for the transport of goods and/or passengers by rail. Included are all transport operators that dispose of/provide traction., vastava tegevusloa saanud ettevõtja, kelle peamine tegevusala on raudteevedu ja kes on kohustatud tagama veduriteenuse, samuti isik, kes osutab ainult veduriteenust