Airport Connection: East-West Line (Green) runs directly from Changi Airport Terminal 2/3 stations to downtown core. Journey takes 45 minutes to Raffles Place, costs S$2.50 with EZ-Link card. Trains run every 3-5 minutes during peak hours, every 7-12 minutes off-peak.

Key Tourist Lines: Circle Line (Yellow/Orange) connects Marina Bay Sands, Clarke Quay, and Orchard Road. Downtown Line (Blue) runs Bukit Panjang to Expo via Little India, Chinatown, and Bayfront stations. North-East Line (Purple) serves Little India, Clarke Quay, and HarbourFront for Sentosa access. Thomson-East Coast Line (Brown) is mostly operational with final stations opening through 2025.

Payment and Operations: System runs 5:30am to midnight daily, extending to 1am Fridays/Saturdays. Get EZ-Link cards at any station for S$12 (S$5 stored value + S$7 card fee) — Works on buses and some taxis too. Alternative: tap contactless bank cards via SimplyGo system, though EZ-Link remains more reliable for tourists.

Navigation Tips: All stations wheelchair accessible with lifts and minimal platform gaps. Use exits A, B, C system — Tourist areas typically use Exit A for main attractions. During rush hours (7-9am, 6-8pm), expect crowded trains especially on East-West and North-South Lines.