IC/EC (InterCity/EuroCity) – IC, express trains connecting the larger domestic destinations. Trains run every hour. Some of these trains travel into adjacent countries as part of the EC (EuroCity) system. ICE (InterCity Express) - Provides high- speed connections between the principal metropolitan areas. Trains run every hour or more frequently. NZ (Nachtzug) – Night train - provides long- distance sleeping accommodations.
IRE (InterRegioExpress) - An express train connecting regional cities at regular intervals. RE (RegionalExpress) - An express train connecting medium and larger-sized towns to main rail hubs. RB (RegionalBahn) - Similar to RE, but slower since it stops in virtually every town along the way. S-Bahn (Schnellbahn) - Commuter rail service in and around major metropolitan areas.