Line BPIM3 (also called the North-South Line or unofficially the Blue Line Ⓜ️BPIM3) is the third and longest line of the Budapest Metro system. 🚇 It runs generally in a north-south direction on the Pest side of the city, roughly following Váci út from Újpest-Központ in the north down to the city center, then following Üllői út southeast to Kőbánya-Kispest. Daily ridership is estimated at around 500,000 passengers, making it one of the busiest metro lines in Budapest. Unlike Line M1, M3 does not serve the Buda side of the city, staying fully on Pest. This refurbished train you see in the video is a part of the modernization efforts that keep Budapest’s transit smooth and safe.