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On January 1st, 2009, we at Union Switch & Signal began a new chapter in our history by transitioning our corporate name to Ansaldo STS USA.  The new name promotes the versatility and strength that comes from the integration of regional rail industry pioneers, with a combined 260 years of signaling experience and technological know-how, into the global leader, Ansaldo STS.
We want to assure you that our legacy of quality and customer service is not diminishing with our name change, but rather it is strengthening through thisunification.
 
Insight & Innovation
 
For over 125 years, Ansaldo STS USA has been known for leading the development of wayside equipment, vital relays and train systems. Today, Ansaldo STS USA is applying its unique knowledge to developing advanced rail control systems.
 
International Reach
 
As a regional company of Ansaldo STS, Ansaldo STS USA serves rail and transit customers in the USA, Canada & Central & South America, with a concentrated focus on transit in China, South Korea and Taiwan.
Ansaldo STS USA  is headquartered in Pittsburgh, Pennsylvania and has manufacturing facilities in South Carolina. Support and sales offices are located throughout the USA, Canada, Italy, Brazil, South Korea and China.
 
 
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From the largest, most complex railroads in the world, to smaller operations focused on specific needs, Ansaldo STS USA is changing the rail industry…one innovation at a time.
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Our enduring history of innovation has transformed the way the world works. Learn about our History of Innovation.
 
 
 
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