The first trolleybus network in Norway, in
Drammen, opened in 1909. After the war the construction of the 4.1-km line 5 started, and in 1950 it replaced tram line 3. By that time, five gasoline buses had been converted, giving a
headway of 10 minutes. A year later, three more buses were bought from
Strømmens Værksted and the headway was reduced to 7.5 minutes. The line was popular, and traffic increased. In 1954 the conversion of tram line 2 to trolleybus started, and in 1957 the 6.5-km line 2 opened with 18 new buses. The ridership reached its peak in 1959 with more than ten million passengers per year on the two routes. In 1960 the sale of cars in Norway was
deregulated, resulting in fewer
public transport riders. In 2019, ten trolleybusses, specifically Solaris Trollino 18 IV were ordered for NOK 80 million, each with 55 kWh battery. The line is to be extended to
Laksevåg. ==References==