See also: railways by line.

Europe

• Eurostar 🇬🇧🇫🇷
• Öresundståg 🇩🇰🇸🇪
• 🇩🇰 Denmark
  • Københavns Metro | Metroselskabet
• 🇫🇮 Finland
  • Helsingin Metro | Helsingin Kaupungin Liikennelaitos
• 🇩🇪 Germany (Deutsche Bahn)
  • Hamburg U-Bahn | Hamburger Hochbahn
• 🇮🇹 Italy (Ferrovie dello Stato Italiane)
  • Trenitalia
  • Trenord
  • Metropolitane di Milano | Azienda Trasporti Milanesi
• 🇸🇪 Sweden
  • SJ (Sveriges Järnvägar)
  • Skånetrafiken
  • Stockholms Tunnelbana | SL (Storstockholms Lokaltrafik)
• 🇬🇧 United Kingdom
  • Great Western Railway
  • Southern
  • South Western Railway (replacing South West Trains)
  • Thameslink
  • London Underground | Transport for London

North America

• 🇨🇦 Canada
  • Métro de Montréal | STM (Société de Transport de Montréal)
• 🇺🇸 USA
  • Amtrak
  • Chicago ‘L’ | CTA (Chicago Transit Authority)
  • RTD (Regional Transportation District) [Denver]
  • San Francisco BART District
  • UTA (Utah Transit Authority)
  • BNSF (Burlington Northern Santa Fe)