Metro unit Inspiro by Siemens and Newag for Sofia. 20 three-car
units of 60 m length and 2.65 m width have been ordered for line 3,
which unlike the two existing lines uses overhead wire power supply.
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InnoTrans, Berlin, 2018-09-21
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<a href="mailto:tbk.uncia@gmail.com">tobias b k&ouml;hler</a>