Metro Line M4 (Budapest Metro) Metro Line M4 (Budapest Metro) Line 4 (officially: South Buda–Rákospalota (DBR) Line, Metro 4 or M4, and unofficially: Green Line), is the fourth line of the Budapest Metro. It opened on 28 March 2014. The first section, 7.4 km in length and consisting of ten stations, connects the southwestern Kelenföld vasútállomás located in Buda, and the eastern Keleti pályaudvar in Pest, under the River Danube. While three additional sections — one an eastern extension to Bosnyák tér, the second west to Virágpiac, and a third further east to Újpalota — have been planned, these remain unfunded by the Budapest city
Kőbánya–Kispest (Budapest Metro) Kőbánya–Kispest (Budapest Metro) Kőbánya-Kispest is the southern terminus of the M3 Line (North-South line) of the Budapest Metro. It is the only station of the line that is above ground. The metro station is named after the train station next to the terminal, which lies on the border of the districts Kőbánya and Kispest. It is also a suburban bus terminal and a changing place of several city bus lines (68, 85, 85E, 93, 93A, 98, 98E, 136E, 148, 151, 182, 184, 193E, 200E - this run from here to Budapest Ferenc Liszt International Airport, 201E, 202E, 282E, 284E), making