When you visit Budapest, don’t forget to ride the fully automated line 4 which extends from Keleti Railway Station to Kelenföld, passing under the Danube between Kálvin and Fővám tér. It uses driverless Alstom Metropolis AM4 - M4 trains, unlike the line 2’s version (AM5 - M2) with a driver’s cab.
Stations in order:
0:00 Keleti pályaudvar (interchange station with line M2 and railways) (start)
0:44 I. János Pál pápa tér
2:02 Rákóczi tér
3:43 Kálvin tér (interchange station with line M3)
5:07 Fővám tér
6:14 Szent Gellért tér - Műegyetem
7:49 Móricz Zsigmond körtér
9:04 Újbuda-központ
11:08 Bikás park
12:33 Kelenföld vasútállomás (terminus)