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, Pennsylvania. Now a part of Ansaldo, US&S traces its history all the way back to its founding in 1881.

1 History
2 Products
3 Clients
4 See also
5 Major Accomplishments
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 the Westinghouse Air Brake Company. 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 STS, 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 the borough of Swissvale for most of its history, US&S built and moved to new main facilities in 1995 on Technology Drive within the city limits. Other facilities include a manufacturing plant in Batesburg, South Carolina, and a service and repair shop in Kingston, Ontario.

[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

Union Switch and Signal was one of the four main contractors (including Colt, Remington-Rand and Singer Sewing Machine) to make M1911A1 pistols during World War Two. The production blocks assigned to them in 1943 was between SNs 1,041,405 to 1,060,000 and 1,060,001 to 1,096,494.^{[citation needed]}