This class includes:
- rail transportation of passengers using railroad rolling stock on mainline networks, spread over an extensive geographic area
- passenger transport by interurban railways - operation of sleeping cars or dining cars as an integrated operation of railway companies
This class excludes:
- Transport for passengers by urban and suburban transit systems, see CAEN 4931
- passenger terminal activities, see CAEN 5221
- Operation of railway infrastructure; related activities such as switching and shunting, see CAEN 5221
- operation of sleeping cars or dining cars when operated by separate units, see CAEN 5590, CAEN 5610