The Jorat Regional Electric Railway Company - or Compagnie des Chemins de fer électriques régionaux du Jorat (in French) merged with TL in 1910, allowing them to double the length of their network and use the electricity power station at Mézières and a depot in Epalinges.

[2] In 1929, TL began their first bus service, followed in 1931 by the first modern trolleybus in Switzerland, on a route between Lausanne railway station and Ouchy.

[2] It led to the closure of the tram line between Closelet and Epinettes, which was not as suitable due to higher costs and the steep slope, meaning low speed and heavy use of brakes.

[2] The last Lausanne tram ran in 1964 between Renens and Rosiaz,[2] but additional trolleybus vehicles are in service for the 1964 National Exhibition.

[2] Shortly afterwards, in 1991, the Tramway du Sud-Ouest lausannois (TSOL) was opened, with TL operating the light rail services.

[5] Work started to clear land for a new line north from the centre of Lausanne on 12 February 2004, with the first stone laid in June.

Network 08 or "Réseau 08" (in French), commonly abbreviated "R08", led to shorter journey times and more direct connections, allowing for changes to movement prompted by the new underground line.

[8] Among the changes were the creation of hubs at locations such as Lausanne-Flon station where a new TL information and sales kiosk was built, replacing the previous one at nearby Place St.

[11] TL publishes a monthly magazine called banc dealing with the news about the public transport network around Lausanne.