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Our fully automated guidance system for tunnels with segmental lining is based on a top-mount, or optionally integrated, laser…



In microtunneling a tunnel laser mounted in the shaft acts as the base of the guidance system. Our Mini…



The acs tunnel guidance system continuously measures and calculates the following values and displays them numerical and graphical in…



1980 Software Development

Consulting engineer’s office “PSP – Beratende Ingenieure für Tunnelbau” developed a computer-based surveying program for tunnel drives with tunnel boring machines. This software was used on the following projects:

  • 1985 metro project „Wöhrder Wiese“ in Nuremberg
  • Metro Essen „Los 33“
  • Storebaelt, Denmark

The well-established relationship between PSP (now: “PSP Consulting Engineers GmbH“) and tacs GmbH still exists to date, whereby the extensive experience of PSP still helps development and  improvement of tacs systems.

Contact PSP:

PSP Beratende Ingenieure für Tunnelbau
Heinrich-Heine-Straße 1
80686 München

phone +49 89  578396-0
fax +49 89  578396-40


1993 Founding of tacs GmbH

The founding of tacs GmbH was accompanied by comprehensive additions and developments of the system.
The acs system software has been completely redesigned and the first Video Target has been developed.
The new system’s first use was on a metro project in Munich (district “Gern”) and was a great success. Since then numerous projects worldwide have been successfully completed with the acs solution.

From 1995 to 1998 Co-operation with VMT GmbH

In this phase the acs system software has been used on all VMT projects with segmental lining.

1997 Complete reengineering of the Video Target

1998 New development of the Mini Video Target

2000 New development of the Micro Video Target for microtunneling

2001 New development of an explosion proof version

Especially for areas with potentially explosive atmosphere in 2001 we developed an explosion proof version (Class I, Div. 2) of the standard and the Mini Video Target which has been used on many projects in North America.

2002 until today: Enhancement of the whole range of products

Thanks to ongoing improvements our products and technologies are steadily optimized and advanced. This is how we guarantee our customers continually have most up-to-date, most accurate and most reliable products.