Concept and Construction
The HM V type trams, alongside the near-identical RM 3 type produced at the same time by Valmet, were the last development in a series of five near-identical tram types produced by Karia and Valmet for operations on the Helsinki and Turku tram network during the 1950s (the previous types being HM IV and RM 1 for Helsinki and RM 2 for Turku).
HKL ordered the HM V type trams from Karia, a daughter company of Suomen Autoteollisuus, in 1957. The series designation stands for Helsingin moottorivaunu, viides sarja (English: Helsinki motor tram, series five). Karia built the bodies and assembled the trams, while Sisu (another daughter company of Suomen autoteollisuus) supplied the bogies and Strömberg the electronics.
Read more about this topic: Karia HM V
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