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
Budapest–Újszász–Szolnok railway trains, LoLa as well. Regional trains are usually made up by 5 coaches and one locomotive. These are usually push-pull trains. Most of them are Bhvs reconstructed in Dunakeszi by Bombardier. Since the autumn of 2012 there are FLIRT stocks as well, which were produced by Stadler. Budapest–Újszász–Szolnok railway Budapest–Újszász–Szolnok railway line is the number 120a line of the MÁV. It is a double track, electrified track, which is part of the international rail system. It goes on as Line number 120, which connects Budapest, Békéscsaba, Lökösháza, Arad (in Romania)]. The line from Budapest to Szolnok is 100 km long.