sentences:  The company was owned by the city council.TT was founded in 1972 as a merged between the municipal owned tramway companies Trondheim Sporvei and Graakalbanen, and the bus company Bynesruten.In 1974, the company was reorganized as a municipal agency, and also took over the private bus operator Trondheim Bilruter, along with the city bus lines of Klæburuten and NSB Bilruter.