Liège to Düsseldorf train with Deutsche Bahn (RE,ICE,RB)

Deutsche Bahn (DB) is Germany’s main train operator, running around 40,000 domestic and international services each day. Its fleet includes a variety of train types: high-speed ICE (Intercity Express) trains, reaching up to 300 km/h; IC (Intercity) and EC (EuroCity) trains for long-distance travel; and IRE (Interregio-Express), RE (Regional Express), and RB (Regionalbahn) services for regional and local connections. While bathrooms are standard on all trains, amenities such as onboard restaurants and free Wi-Fi are available only on certain train types and routes. DB offers a wide range of fares, including Super Saver, Saver, and Flexible tickets, along with discount cards like the BahnCard 25, 50, and 100. Additional options include single tickets, day tickets, and group tickets. Popular routes include Berlin–Munich, Hamburg–Frankfurt, Cologne–Stuttgart, Berlin–Dresden, and Hamburg–Cologne, as well as numerous regional services across Germany.

Eurostar is a high-speed international rail service connecting the UK with France, Belgium, the Netherlands, and Germany, primarily via the Channel Tunnel. Since merging with Thalys in October 2023, Eurostar now operates an expanded network across Western Europe. Known for its city-center to city-center travel, Eurostar offers a convenient and environmentally friendly alternative to flying. Passengers can enjoy amenities like complimentary Wi-Fi and power sockets at every seat. Key destinations include London, Paris, Brussels, Amsterdam, and Cologne, with seasonal services to other locations.

FlixTrain is a German railway company owned by FlixMobility, the parent company of FlixBus. Since 2018, it has connected major German cities such as Hamburg, Cologne, Stuttgart, Berlin, and Frankfurt, and also operates routes in Sweden, including Stockholm to Gothenburg. All FlixTrain services run on 100% renewable energy. Onboard facilities include air conditioning, toilets, USB ports, power outlets, generous legroom, and free Wi-Fi on most trains. Food and drinks are available, and every ticket guarantees a seat. Passengers can bring luggage free of charge, provided it fits in the racks. Popular German routes include Berlin–Hamburg, Frankfurt–Stuttgart, and Cologne–Hamburg, offering a sustainable and comfortable way to travel

The term \Regional\" can refer to different train companies and services depending on the country. In Germany, \"Regionalbahn\" (RB) is a type of local passenger train that typically stops at all stations on a given line, connecting cities to their surrounding areas. Many RB trains are operated by DB Regio, a division of Deutsche Bahn, but other companies also run these services."