Rail infrastructure

SBB rail staff replacing tracks at night
The Swiss rail network is regularly updated to the latest technology and adapted to traffic needs.
© SBB

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