Union Switch & Signal

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Union Switch and Signal
Type	part of Ansaldo since 1996
Founded	1881
Headquarters	Pittsburgh, Pennsylvania
Industry	Manufacturing
Products	Equipment and services for rail transport
Revenue	N/A
Employees	500+
Website	www.switch.com

Union Switch and Signal (US&S) is a supplier of railway signaling equipment, systems and services in Pittsburgh, PA. Now a part of Ansaldo Signal, US&S traces its history all the way back to its founding in 1881.

1 History
2 Products
3 Clients
4 Major Accomplishments
5 See also
6 External links
7 References

[edit] History

George Westinghouse founded Union Switch & Signal, abbreviated (US&S), in 1881, consolidating the assets of companies that had pioneered closed track circuits and interlockings. Operating as an independent company until 1917, US&S became a subsidiary of Westinghouse Air Brake. In 1968, American Standard purchased the entire operation and reorganized US&S as a separate division.

In 1988, Ansaldo purchased US&S from American Standard. In November 1993, US&S became a publicly traded company with shares listed on Nasdaq. In December 1996, US&S merged with the other signaling investments of Ansaldo located around the world. As a result of that merger, US&S is now a wholly owned subsidiary of Ansaldo Signal, a global supplier of signaling, control and automation systems with operations worldwide.

Throughout its history, US&S has been in the Pittsburgh area. Located in East Pittsburgh for most of its history, US&S built and moved to new main facilities in 1995 on Technology Drive within the city limits.

[edit] Products

Carborne signaling equipment
- ATC
- ATP
- ATS
Wayside signaling equipment
- DC code systems
- electronic communication systems
- electronic interlocking
- relays
- signals
- switch machines
- track circuits
Central Control signaling equipment
- computer-based Manual Control Systems
- computer-based Traffic Management Systems
- dark territory control systems
- electro-mechanical cTc machines