Non-train rail transport in Bulgaria is limited to tram and metro services in Sofia, both managed by their own municipality-owned companies.
The capital Sofia is the only Bulgarian city with an urban rail network.
This abandoned railway has seen renewed interest in 2019, with proposals to either partially restore and use it for connections to Sofia Airport and subway stations, convert it into a "green ring route" for bicycles, or both.
[3] In May 2020, it was decided that parts of this railway will not be restored for train movement, but for bicycles and pedestrians instead.
It was unveiled in 1998 and has four lines with a total length of 52 km 32 mi and 47 stations.