After World War II, only two buses ran in Szczecin. Others had been damaged or were used for evacuation. The first post-war bus line was launched on 4 August 1947 (the route had been operated by pre-war bus Bussing) and ran from Kościuszki Square to Gumieńce. Public transport had been managed by Tramwaje i autobusy miasta Szczecina. In 1948 five lines were running, which led to Dąbie, Police, Żydowce, Stołczyn and Gumieńce, operated by buses: Büssing, GMC, Leyland (since 1948). In the 50s, a number of bus lines were running: Mavag, Star, San, Chausson, Škoda-Karosa, Renault, Nysa, Jelcz-Berliet and Jelcz 272. In 1955, marking of lines was changed from alphabetical to numerical. In the middle 60s, the first bus depot was built in Klonowica Street. Earlier buses had been stored in the tram depot in Kolomuba Street. Number of bus lines increased: in 1960 there were 10 lines, in 1964 were 16 lines (including one shortened: "bis"), in 1968 were 22 lines (including 3 bis-lines and one to Wyspa Pucka). In 1976, Miejski Zakład Komunikacyjny was transformed into Wojewódzkie Przedsiębiorstwo Komunikacji Miejskiej (WPKM), which also managed public transport in other cities of the voivodship. In 1978, construction of "Dąbie", the second bus depot in Szczecin was completed. Seven years later another bus depot opened—in Police. On 12 November 1981, the first Ikarus 280 buses began operation. By 1990 almost 300 buses had been bought. Since 1985, night bus lines began supporting night tram lines. In the same year, the first Jelcz M11 buses appeared on routes.
