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 Budapest has an above-average proportion of people commuting on public transport or walking and cycling for European cities. Riding on bike paths is one of the best ways to see Budapest – there are currently about of bicycle paths in the city, fitting into the EuroVelo system. "Crime" in Budapest investigated by different bodies. United Nations Office on Drugs and Crime notes in their 2011 Global Study on Homicide that, according to criminal justice sources, the homicide rate in Hungary, calculated based on UN population estimates, was 1.4 in 2009, compared to Canada's rate of 1.8 that same year. The