Rail infrastructure

Construction workers work at the expansion of the Bern railway station
The Swiss rail network is regularly updated to the latest technology and adapted to traffic needs.
© FOT

The federal authorities are responsible for operating and maintaining the railway infrastructure and ensuring it meets traffic needs. The FOT is assigned the task of planning and overseeing the further expansion of the railway infrastructure.

https://www.bav.admin.ch/content/bav/en/home/modes-of-transport/railways/rail-infrastructure.html