Ha Noi N20 N21 Khu do thi Sai Dong
| Origine | Destination | Départ | Arrivée |
| Ha Noi N20 N21 Khu do thi Sai Dong | Lang Son Office | 07:00 | 07:02 |
| Type | Nom | km |
| bus | Vinhomes Riverside Roundabout | 0.7 |
| bus | 99 Chu Huy Man | 1.0 |
| bus | Trau Quy Crossroad | 1.3 |
| bus | Vinhomes Riverside | 1.5 |
| bus | 33 Nguyen Thoi Trung | 1.6 |