This Directive shall apply to activities relating to the provision or operation of networks providing a service to the public in the field of transport by railway, automated systems, tramway, trolley bus, bus or cable.

As regards transport services, a network shall be considered to exist where the service is provided under operating conditions laid down by a competent authority of a Member State, such as conditions on the routes to be served, the capacity to be made available or the frequency of the service.