What.. unaesthetic Tatra tram. Sometimes. It is better, to keep the original exterior look instead trying to invent a new tram. Such failed results sadly not only on legendary Tatra trams.

You may be surprised but it is an ex-Chemnitz trailer tramcar (that is, not a motor tramcar)! Which is indicated by a B (Czech "Běžný" = trailer-tramcar, Straßenbahnanhänger) in its model code Tatra B3DM rather than a usual T (Czech "Trakční" = motor tramcar), as in Tatra T3. This means that previously this car looked like the one here: http://transphoto.ru/photo/911929/ And only after its arrival to Barnaul it was made into an independent motor-car but kept its original "trailer-car" code B3. There are also several other such tramcars in Barnaul:

http://transphoto.ru/list.php?t=1&cid=107&mid=2591
http://transphoto.ru/list.php?serv=0&mid...83&cid=107

Thank you for your info, I did not know it was a Gernman trailer car!