Lille to Arlon train with PKP Intercity

Intercity is a broad classification for express train services that connect cities over longer distances than commuter or regional trains, often with limited stops and comfortable carriages for long-distance travel. The term \InterCity\" originated with British Rail in 1966 for its electrified West Coast Main Line services.Today, \"Intercity\" or \"IC\" is a brand name used by various railway operators across Europe and other parts of the world, including PKP Intercity in Poland, Trenitalia in Italy, and services in countries like Sweden and Ukraine. These trains typically offer both Standard and First Class seating, with amenities such as power sockets and luggage space. While some Intercity services are modern and high-speed, others may use older rolling stock, with speeds generally up to 160 km/h (100 mph)."

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.

SNCF's TGV INOUI is a premium high-speed train service operating across France and to other European cities. Launched in 2017, it aims to provide an enhanced travel experience with greater comfort, connectivity, and services compared to traditional TGV services. TGV INOUI trains offer features like adjustable seats, electrical outlets, fold-down tables, and dedicated luggage spaces. Passengers can enjoy onboard Wi-Fi and access to the TGV INOUI portal for entertainment and journey information. The service also includes a \Bistro TGV INOUI\" for dining, with options for online ordering. SNCF is also introducing a new generation of TGV INOUI trains from 2026, which will be more modular, energy-efficient, and 97% recyclable."

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."