The Norwegian Teaching College in Trondheim established a campus in Hanrik Mathiesens vei in 1960, giving a boost to traffic. While the Rosenborg Loop had given a huge increase in traffic, it was not sufficient to stop the decline after 1960. With the deregulation of the sales of cars, and a new, expansive city planning based on distant suburbs and motorways, the tramways in town were quickly losing market shares. Line 3 had the largest decline, and in 1961 it was losing NOK 131,000 annually. In 1962, Director Odd Hovdenak made three suggestions: 10-minute headway; removal of the conductors which had been reintroduced during World War II; or replacing the tram with buses, and at the same time changing the route to follow Nonnegata. The removal of conductors would again make the line profitable, while the reduced headway would not. Hovdenak recommended introducing buses.