 Link | North South Line | East West Line | North East Line | Circle Line | Downtown Line |
|---|---|---|---|---|---|
| Operator | SMRT Trains | SMRT Trains | SBS Transit | SMRT Trains | SBS Transit |
| Image |  |  |  |  |  |
| Opened | Nov. 7th 1987 | Dec. 12th 1987 | Jun. 18th 2003 | May 28th 2009 | Dec. 22nd 2013 |
| Depot | Bishan & Ulu Pandan | Ulu Pandan, Changi & Tuas | Sengkang | Kim Chuan | Gali Batu & Kim Chuan |
| STARiS | Yes | Yes | No | No | No |
| STARiS 2.0 | Yes (C151B, Refurbished C651 and C151C only) | Yes (C151B, Refurbished C651 and C151C only) | No | No | No |
| TTIS | No | No | No | Yes | Yes |
| DRMD | No | No | Yes (C751C only) | Yes (C830C only) | Yes |
| VPIS | No | No | Yes | No | No |
| No of stations | 26 | 35 | 16 | 30 | 34 |
| Terminus | Jurong East/Yishun/Ang Mo Kio/Marina South Pier | Pasir Ris/Tanah Merah/Joo Koon/Tuas Link/Changi Airport | HarbourFront/Punggol | Dhoby Ghaut/Marina Bay/Stadium/HarbourFront | Bukit Panjang/Expo |
| Rolling stock | C151, C651, C751B, C151A, C151B & C151C | C151, C651, C751B, C151A, C151B & C151C | C751A & C751C | C830 & C830C | C951 |
| Complete extension | 2019 (Canberra) | 2025 (Tuas Southwest Extension) | 2023 (Punggol Coast) | 2025 (Circle Line stage 6) | 2024 (Downtown Line 3e) |
| Colors | Red | Green | Purple | Yellow | Blue |
| Signalling system | CBTC (from 2017) | CBTC (from 2018) | CBTC | CBTC | CBTC |
| Symbols | NS | EW (mainline); CG (Changi branch) | NE | CC (mainline); CE (extension) | DT |