The Montreux/Vevey trolleybus system (Réseau trolleybus de Montreux/Vevey), also known as the Vevey–Villeneuve trolleybus line, forms part of the public transport network in Montreux and Vevey, in the canton of Vaud, Switzerland. It comprises a single long trolleybus route along the length of the Riviera vaudoise (Vaud Riviera) on the north shore of Lake Geneva.
Opened in 1957, the line is designated as line 201 (prior to 11 December 2010, line 1) of the local bus network, operated by Transports publics Vevey-Montreux-Chillon-Villeneuve (VMCV). In addition to line 201, the VMCV runs eight motorbus lines. However, with 5,204,000 passengers annually, the trolleybus route is by far the busiest of all the operator's lines, and generates 74 percent of its total revenue.
The Vevey–Villeneuve trolleybus line is the last remaining of several interurban trolleybus lines that have existed in Switzerland. It largely follows Swiss main road no. 9, and passes through the municipalities of Vevey, La Tour-de-Peilz, Montreux, Veytaux and Villeneuve, and as of 2019 served a total of 41 stops.
The trolleybus line's ultimate predecessor, the Vevey–Montreux–Chillon tramway, opened in 1888, and was Switzerland's first electric tramway. The line was extended to Villeneuve in 1903, and became the Vevey–Montreux–Chillon–Villeneuve tramway in 1913. Plans to replace the tramway with a trolleybus line were first developed in 1938, but in view of the outbreak of World War II, the design work was discontinued.
It was only in 1955 that the construction of the trolleybus catenary was begun. The route went into operation in four sections as follows:
Initially, the trolleybus service ran at a headway of 7.5 minutes, which compared favourably with the eight-minute headway of the trams. From 1966, six passenger trailers were available to augment the trolleybuses' capacity during rush hour.
Conductors were used to collect fares until 1976, an unusually late conversion to one-person operation for a Swiss transport system.