The Sofia trolleybus system (Bulgarian: Тролейбусен транспорт София) forms part of the public transport network of Sofia, the capital city of Bulgaria. In operation since 8 February 1941, the system presently comprises ten routes with 257 km network build, of which 193 km are currently in use. As of 2020 the average speed of the trolleybus system in Sofia is 15.7 km/h. Trolleybus transport was the last form of surface public transport to develop in Sofia, after buses and trams. The first Sofia trolleybus line opened on 8 February 1941. 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. More information...
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