world war ii would show the highest ridership on the line through history. with the rationing on petrol, soon only the electric trams operated. cities without trams or trolleybuses were stuck without public transport. 1940 showed an increase to 884,000 passengers, and for the first time the company made a profit. ridership continued to increase, with 1.2 million in 1941, and up to 2.16 million in 1945. conductors had to be taken into use, and even women were employed. to save time on the route, the stations ferstad, kyvannet, vestmarka and herlofssonløypa were not served on the way up. in addition, an extra tram was operated from st. olavs gate to hoem.