Lines N3 and N4 of Sofia's night public transport resume their operation from December 23. With their launch, four lines will operate in Sofia every night, including holidays, the Urban Mobility Center announced. Line N3 connects Ovcha Kupel residential district and Levski-G district via Hadzhi Dimitar Metro Station. Line N4 will connect Gotse Delchev residential district and Druzhba 2. Bus lines N3 and N4 will stop at all existing tram, bus and trolleybus stops along the routes.

 Line N1 connects Lyulin district and Mladost district, while line №2 connects Studentski Grad district and Obelya district. Transfers between the lines will be made at Knyaz Alexander I Square stop, which is common to all night buses. Time intervals are to be reduced. Line N5 to Sofia Airport and a line 5 night tram service from the Sofia Court House to Knyazhevo district will be launched as well.