
The InterRegio, often shortened to IR, is a train category for mainly domestic train services in use in some European countries, with Swiss Federal Railways operating the most dense network. InterRegio trains are semi-fast long-distance trains with more stops and usually lower prices than more upscale long-distance trains such as the InterCity (IC).
The InterRegio, often shortened to IR, is a train category for mainly domestic train services in use in some European countries, with Swiss Federal Railways operating the most dense network. InterRegio trains are semi-fast long-distance trains with more stops and usually lower prices than more upscale long-distance trains such as the InterCity (IC).
==Austria== thumb|Interregio of ÖBB Austrian Federal Railways (ÖBB) has introduced the Interregio category since August 2025 for long-distance services on routes that before were only served by regional trains and routes currently served by long-distance trains only. The main introduction is scheduled for December 2025.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).