Budapest Metro Line M3 receives first renovated Metrowagonmash train March 28, 2017 | Europe News Budapesti Közlekedési Központ (BKK) has deployed the first renovated 81-714 2K train for passenger operations on Budapest Metro Line M3. The train is the first of 37 six-car trains to... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password