PostBus is the leading bus company in Switzerland's public transport network. With round 3,500 employees (incl. the drivers of the PostBus companies) and more than 2,150 vehicles at its disposal, PostBus carries round 130 million passengers each year. It has a share capital of CHF 72 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.