Are there restrictions on bike self-loading?

In the cycling season from 21 March to 31 October, reservations must be made on all InterCity tilting trains (ICN train category), as well as on individual Interregio trains towards the Gotthard. Please consult the timetable before travelling. On certain buses telephone booking is recommended. You can find the telephone numbers in the relevant timetable fields at www.timetable-fields.ch.