Sofia trams - Duewag

The ex-Bohn Duewag trams, operating in Sofia since 1995. The trams were build in the late 50's and the early 60's. They were more than 50 years in a regular service, because of their good reliability and simplified maintenance. But in the beginning of 2016 most of them should be taken out of service, due to the delivery of 20 Tatra T6A5 trams from Prague.