The system also serves the neighbouring municipalities of Villars-sur-Glâne and Givisiez, using one line in each case.

The solitary route, 12.5 km (7.8 mi) long, was largely rural, and the fleet comprised just three vehicles.

[3] The individual line sections of the Fribourg trolleybus system went into operation as follows:[4] The present system is made up of the following cross-city routes, including dual-mode line 1: In the past, at one time or another the trolleybus fleet has included two-axle vehicles made by several different manufacturers, including Vétra-Renault, Vétra-Berliet, Saurer, Henschel and Volvo.

[2] In 2005, the route section to Les Dailles was fitted with trolleybus wiring, allowing trolleybuses to serve route 2 entirely in electric mode, except for certain weekday trips to Les Biches, which section remained unwired.

[5] A total of 21 vehicles is available to operate trolleybus services in Fribourg, all of them low-floor articulated buses: