As of 2012[update], the system consists of three lines, 35 stops, and a total route length of 21.7 km (13.5 mi).

On 2 and 3 December 1939, the City of Bern's voters decided to introduce trolleybuses as a third form of urban public transport.

The Bern trolleybus system went into operation on 29 October 1940 on line 12, between Bärengraben and Schosshalde, and served initially only as a tramway feeder.

Only on 1 September 1947 did the two companies merge, to form Städtische Verkehrsbetriebe Bern (SVB).

The most recent network expansion, opened on 20 June 2005, was an extension of line 12 of approximately 650 m (2,130 ft), from Schosshalde to Zentrum Paul Klee.

On 1 July of that year, the trolleybus system then shrank significantly, as lines 13 and 14 were temporarily converted to motor bus operation during the project Tram Bern-West, until 2010, when the tramway network took over the operation of these two western branches.

In 2010, the Bern trolleybus system yielded the following statistics:[2] The present system is made up of the following lines: Due to the lack of a turning circle at Wyleregg, the supplementary services that run on line 20 on school days are operated by diesel buses.

In 2006, the eleven vehicles with the fleet numbers 33, 34, 46, 53, 54 and 56 to 61 were delivered to the Brașov trolleybus system in Romania, where they are still in service.

Also known as Swisstrolley 2s, they were purchased in two groups: Media related to Trolleybuses in Bern at Wikimedia Commons