{{Short description, Swiss railroad company (c. 1890–1992)
Integra Signum was a
publicly traded
A public company is a company whose ownership is organized via shares of stock which are intended to be freely traded on a stock exchange or in over-the-counter markets. A public (publicly traded) company can be listed on a stock exchange (list ...
Swiss
Swiss may refer to:
* the adjectival form of Switzerland
* Swiss people
Places
* Swiss, Missouri
* Swiss, North Carolina
*Swiss, West Virginia
* Swiss, Wisconsin
Other uses
*Swiss-system tournament, in various games and sports
*Swiss Internation ...
company active in train control and signaling systems. Its main achievement was the development of the train control system
Integra-Signum
Integra-Signum is a Swiss train protection system introduced in 1933. Originally it was called Signum; the name Integra was added later. It transmits data inductively and is simple, robust and reliable also in snow.
How it works
The locomotives ...
, which was subsequently adopted by the
Swiss Federal Railways
Swiss Federal Railways (german: link=no, Schweizerische Bundesbahnen, ''SBB''; french: link=no, Chemins de fer fédéraux suisses, ''CFF''; it, Ferrovie federali svizzere, ''FFS'') is the national railway company of Switzerland. It is usuall ...
in 1933. In addition, many Swiss railway stations were (and continue to be) equipped with the company's signal boxes from the Domino 55, Domino 67, or Domino 69 series. Headquartered in
Wallisellen
Wallisellen is a municipality in the district of Bülach in the canton of Zürich in Switzerland, and belongs to the Glatt Valley (German: ''Glattal'').
History
The first settlement at Wallisellen dates from 58 BC. The municipality Wallisellen h ...
, the company existed from the late 19th century until January 1, 1992, when it was acquired by
Siemens
Siemens AG ( ) is a German multinational conglomerate corporation and the largest industrial manufacturing company in Europe headquartered in Munich with branch offices abroad.
The principal divisions of the corporation are ''Industry'', '' ...
. Siemens renamed the company to Siemens Integra Verkehrstechnik. It is now a division of
Siemens Mobility
Siemens Mobility GmbH is a separately-managed company of Siemens, arising from a corporate restructuring effective 1 August 2018. With its global headquarters in Munich, Siemens Mobility has four core business units: Mobility Management, dedi ...