 It is also integrated into the Salzburger Verkehrsverbund.Along with the Salzburg S-Bahn, it forms the backbone of the Salzburg's public transport network; the city's diesel bus network, operated by Albus Salzburg, plays only a minor role.On 1 October 1940, the first trolleybus ran through the streets of Salzburg, on the Siegmundsplatz–Maxglan route, which is now part of line 1.