About SZU
With around 200 employees, we operate the Sihltalbahn (S4), the Uetlibergbahn (S10) and the Felseneggbahn. Within the Zurich Transport Network (ZVV), SZU is also responsible for bus services in the Zimmerberg region.
Our guiding principles
Mission
We offer our customers an efficient transport chain and thus make an important contribution to daily life in the region.
Vision
Those who travel with us get more out of life.
Our values

Local
As a regional transport company, we are in the heart of our market and close to where the action is – a strength we like to exploit.

Personal
Proximity to our stakeholders is important to us. We set ourselves apart from others by maintaining a personal touch.

Transparent
We ensure that we are understood by our stakeholders with clear messages that are as unambiguous as possible.
The SZU vehicle fleet

Sihltalbahn and Uetlibergbahn
The Sihltalbahn operates the S4 S-Bahn line from Zurich main station to Sihlwald, and the Uetlibergbahn operates the S10 S-Bahn line from Zurich main station to Uetliberg.

Zimmerbergbus
The Zimmerbergbus buses operate on the left bank of Lake Zurich and in the Sihltal.
More about SZU
You can find important facts and figures here, as well as news and general information about SZU.
Facts and figures
Passengers, travel distances, punctuality scores and more – you can see all the figures here.
Company profile
Different passengers, different modes of transport, different professions: SZU is a multifaceted company.
SZU’s history
The history of SZU began with the opening of the Zurich–Langnau stagecoach line on the Albis–Zug route in 1835.