RM 2 was a class of two-bogie four-axle (Bo′Bo′ wheel arrangement) tram operated by (Finnish: Turun kaupungin liikennelaitos (TuKL); Swedish: Åbo stads trafikverk), popularly known as "ghost cars". They were the last trams acquired for the Turku tram network prior to its closure in 1972, built by the Finnish metal industry corporation Valmet in 1956. Although never operated as such, these trams were designed for use on light rail lines.