The public transport in Sofia consists of a comprehensive network of bus, trolleybus, tram and metro lines.
It is overseen by the Sofia Urban Mobility Center, a municipal enterprise responsible for route planning, scheduling, fare collection and ticket inspection.
[6] As of 2006, the tram system included approximately 308 kilometres (191 miles)[6] of narrow and standard gauge one-way track and operates 15 lines.
It was over 3 km (2 mi) long, and connected the city with the Gorna Banya quarter.
The line was covered by 2 MAN trolleybuses, which were stored on the last stops during the night, due to the lack of depot.
[7] During the communist era, the bus fleet consisted mainly of Ikarus and Bulgarian-made Chavdar buses.