If you have a (super) saver fare ticket, you can only travel on the service indicated on the ticket. Offers are available for ICE/IC/EC connections within Germany. You can use local transport (e.g. RE, RB, IRE and S-Bahn or non-DB trains) to get to/from a long-distance station if you include them in your booking. You are not restricted to travelling on a specific train when using local rail services. However, your journey must be completed by 10:00 am the following day.