Budapest’s long-discussed plan to extend Metro Line 3 could finally be moving towards construction, with the city now reviewing existing plans for a new section reaching Rákospalota-Újpest. But before work can begin, around 24 properties – most of them residential – must be acquired, while the project faces a tight timetable and an unusual challenge: the extension would initially have to be served by the line’s existing Russian-built trains. The current review will determine whether the existing plans, permits, property arrangements and available trains provide a realistic basis for finally moving the project from paper to construction.