 In conjunction with the 1914 Jubilee Exhibition at Frogner, the Frogner Line was extended along Kirkeveien to Majorstuen on 15 May 1914.In September a new depot opened at Majorstuen, with place for 75 vehicles—the largest in Scandinavia.The third connection opened in 1915, linking Jernbanetorget to the Kampen Line and the Vålerenga Line through a connection along Vognmannsgata, Brugata and Vaterland Bridge.