PostBus is the leading bus company in Switzerland's public transport network. With more than 3,300 employees (incl. the drivers of the PostBus companies) and more than 2,100 vehicles at its disposal, PostBus carries over 120 million passengers each year. It has a share capital of CHF 25 million.

Its trademark – the three-tone horn and the yellow Postbuses – are part of Switzerland's cultural identity. The PostBus brand embodies the values of reliability, security and trust.