The two lines, 4E and 12, operate through workings, that is, services, worked primarily by NGT8 stock, operate through and line designations are changed at terminals. Line 4E, however, operates only during daytime service hours, on weekdays only during peak periods. At noon the direction of travel changes. Thereafter, only Line 12 operates between Gohlis-Nord and Johannisplatz. Earlier services operate from Gohlis-Nord via the Prager Straße, the Riebeckstraße, and Reudnitz before returning to Gohlis-Nord. At the Prager Straße / Riebeckstraße intersection, the line number is changed. However, afternoon services operate around the "Ring" in the opposite direction. Line numbers are changed at the Goerdelerring and at the Prager Straße / Riebeckstraße intersection. On weekdays and on Saturdays, during daytime service hours, service operates at 10-minute intervals, and at 15-minute intervals at other times. The two lines connect the districts of Gohlis, Nordvorstadt, Reudnitz and Thonberg with the town center.