| Line 20 | |
|---|---|
| 20 | |
| Overview | |
| Other name(s) | M20, R4 (planned name) |
| Status | Planned |
| Termini | |
| Stations | 5 (Phase 1) |
| Service | |
| Type | Rapid transit |
| System | Beijing Subway |
| History | |
| Opened | 2028 (Planned, Phase 1)[1] |
| Technical | |
| Character | Underground and elevated |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) |
Line 20 of the Beijing Subway (Chinese: 北京地铁20号线; pinyin: běijīng dìtiě èrshí hàoxiàn), or Line R4 (Chinese: 北京地铁R4线; pinyin: běijīng dìtiě R sì xiàn) is a rapid transit line under planning in Beijing.
The first phase of Line 20 will be 21.3 km in length with 5 stations.[2]
It is expected to open in 2028.[1] There will be through service between Line 3 and Line 20.[3]