The second half of the twentieth century saw public transport introduce more and more buses and coaches alongside rail transport (trams, metro and trains). Motor coaches were the ideal means of transport for linking outlying towns that were not served by the railway network.
The development of public road transport in Switzerland was characterised by the PostBus service. Launched in 1849 during the mail coach era, it adapted with the times as the decades passed. The first regular motorised post service between Berne and Detlingen was launched in 1906.