Ansaldo STS
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Hitachi Rail STS SpA (from ''Hitachi Rail Signalling and Transportation Systems'') or Hitachi Rail STS (previously Ansaldo STS) is an Italian transportation company owned by
Hitachi () is a Japanese Multinational corporation, multinational Conglomerate (company), conglomerate founded in 1910 and headquartered in Chiyoda, Tokyo. The company is active in various industries, including digital systems, power and renewable ener ...
with a global presence in the field of
railway signalling Railway signalling (), or railroad signaling (), is a system used to control the movement of railway traffic. Trains move on fixed rails, making them uniquely susceptible to collision. This susceptibility is exacerbated by the enormous weight ...
and integrated transport systems for passenger traffic (railway/mass transit) and freight operations. Hitachi Rail STS plans, designs, manufactures, installs and commissions signaling systems, components and technologies for the management and control of newly built or upgraded railways, transit and freight lines worldwide. Headquartered in
Genoa Genoa ( ; ; ) is a city in and the capital of the Italian region of Liguria, and the sixth-largest city in Italy. As of 2025, 563,947 people live within the city's administrative limits. While its metropolitan city has 818,651 inhabitan ...
,
Italy Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land b ...
, it is a wholly owned subsidiary of
Hitachi () is a Japanese Multinational corporation, multinational Conglomerate (company), conglomerate founded in 1910 and headquartered in Chiyoda, Tokyo. The company is active in various industries, including digital systems, power and renewable ener ...
. It was previously listed on the
Borsa Italiana Borsa Italiana () or Borsa di Milano (), based in Milan at Palazzo Mezzanotte, Mezzanotte Palace, is the Italy, Italian stock exchange. It manages and organises domestic market, regulating procedures for admission and listing of companies and i ...
and was a component of the benchmark
FTSE Italia Mid Cap The FTSE Italia Mid Cap is a stock market index for the Borsa Italiana, the main stock exchange of Italy. It is one of the indices in the FTSE Italia Index Series. Components The index consists of listings See also * FTSE MIB References ...
Index. Providing design, manufacture, installation, integration and maintenance of a wide range of train control systems and equipment, Hitachi Rail STS employs 4,327 people worldwide as of 2018.


History


1853–2006: Ancestor companies

The company’s namesake comes from the Italian company Gio. Ansaldo & C., was founded in 1853 in Genoa, Italy by Giovanni Ansaldo. ''Gio. Ansaldo & C.'' began as a steam locomotive producer, which diversified into shipbuilding and electrical and nuclear energy production. In 1881, the US company Union Switch & Signal (US&S) was founded by
George Westinghouse George Westinghouse Jr. (October 6, 1846 – March 12, 1914) was a prolific American inventor, engineer, and entrepreneurial industrialist based in Pittsburgh, Pennsylvania. He is best known for his creation of the railway air brake and for bei ...
in
Pittsburgh, Pennsylvania Pittsburgh ( ) is a city in Allegheny County, Pennsylvania, United States, and its county seat. It is the List of municipalities in Pennsylvania#Municipalities, second-most populous city in Pennsylvania (after Philadelphia) and the List of Un ...
from the assets of the Interlocking Switch & Signal Company (interlocking controls) and the Union Electric Signal Company. The latter was founded by the American engineer and inventor William Robinson, the father of
track circuit A track circuit is an electrical device used to prove the absence of a train on a block of rail tracks to control railway signals. An alternative to track circuits are axle counters. Principles and operation The basic principle behind the t ...
systems. In 1988 US&S was acquired by Ansaldo STS,Let's Learn From the Past: Union Switch & Signal Co.
by Brady Smith on the ''Pittsburgh Post-Gazette'', 13 March 2014 (archived, 9 April 2015)
operating independently until 2009, when it became "Ansaldo STS USA", the North American
subsidiary A subsidiary, subsidiary company, or daughter company is a company (law), company completely or partially owned or controlled by another company, called the parent company or holding company, which has legal and financial control over the subsidia ...
of Ansaldo.Ansaldo STS USA
on Ansaldo website (archived, 8 March 2009)
In Europe, Ansaldo STS expanded acquiring the French company Compagnie des Signaux pour Chemins de fer (CSE) in 1996. Founded in 1902 by Fernand Cumont with the support of the financial group Empain, CSE built the first lines of the Paris metro: the maintenance of these lines continues until today. In 1920 CSE (independent since 1912) was renamed into Company and Business Electrical Signals (CSEE), concentrating on rail signaling and electrical manufacturing, contributing to create SAGEM and later (1996) entering in the Ansaldo Signal group. In 1993 the parent company Ansaldo SpA was merged into the
Finmeccanica Leonardo S.p.A., formerly Leonardo-Finmeccanica and originally Finmeccanica, is an Italian multinational company specialising in aerospace, defence and security. Headquartered in Rome, the company has 180 sites worldwide. It is the 12th largest ...
holding, a state-owned entity privatized during the same year. In 2001, Ansaldo SpA’s transportation business was separated and divided into three companies:
AnsaldoBreda Hitachi Rail Italy S.p.A. is a multinational rolling stock manufacturer company based in Pistoia, Italy. Formerly AnsaldoBreda S.p.A., a subsidiary of state-owned Finmeccanica, the company was sold in 2015 to Hitachi Rail of Japan. After the dea ...
(rolling stock manufacturer); Ansaldo Segnalamento Ferroviario (signaling and rail traffic control automation); Ansaldo Trasporti Sistemi Ferroviari (transport systems design construction and maintenance). Ansaldo Segnalamento Ferroviario became the parent company of Ansaldo Signal (
railway signalling Railway signalling (), or railroad signaling (), is a system used to control the movement of railway traffic. Trains move on fixed rails, making them uniquely susceptible to collision. This susceptibility is exacerbated by the enormous weight ...
), the owner of Union Switch & Signal and CSEE.


2006–2019: Ansaldo STS

The company was founded as "Ansaldo STS" in 2006 through the merger of Ansaldo Trasporti Sistemi Ferroviari and Ansaldo Signal. It began trading on the Milan Stock exchange, with 60% of its shares publicly held and 40% owned by Finmeccanica S.p.A. Both companies had their roots in the Ansaldo engineering conglomerate which was gradually absorbed by Finmeccanica. Ansaldo Trasporti Sistemi Ferroviari was created in 2000, acquiring certain units of Ansaldo Trasporti (which had been fully integrated into Finmeccanica) the following year. The creation of Ansaldo STS was followed by a partial
IPO An initial public offering (IPO) or stock launch is a public offering in which shares of a company are sold to institutional investors and usually also to retail (individual) investors. An IPO is typically underwritten by one or more investment ...
in March 2006. On 24 February 2015
Hitachi () is a Japanese Multinational corporation, multinational Conglomerate (company), conglomerate founded in 1910 and headquartered in Chiyoda, Tokyo. The company is active in various industries, including digital systems, power and renewable ener ...
acquired Finmeccanica’s 51% shareholding and initiated a
tender offer In corporate finance, a tender offer is a type of public takeover bid. The tender offer is a public, open offer or invitation (usually announced in a newspaper advertisement) by a prospective acquirer to all stockholders of a publicly traded corp ...
for the remaining shares of the company. In the occasion of the Ordinary General Shareholders’ Meeting on 2 November, Hitachi Rail Italy Investment completed the acquisition of the 40% of the share capital of Ansaldo STS. During the first meeting of the new board of directors, chaired by Alistair Dormer, Stefano Siragusa was confirmed as chief executive officer and general manager of the company, with the powers to manage the company and the group. In March 2015, after the public tender offer launch on the society and after the purchase of other shares at 10.5 euros each, Hitachi Rail Italy Investments arrived at 50.7% of the share capital. Hitachi has a long term goal of integrating the company to provide a range of cars and signaling products and a manufacturing footprint in Europe. Stefano Siragusa, chief executive officer and general manager of the company, resigned on 31 March 2016 and remained in charge until 13 May 2016 when, on the occasion of the shareholders’ general meeting the new board of directors were elected. On 24 May, the new Board appointed Andrew Barr as the new chief executive officer and general manager of Ansaldo STS. Andrew Barr was also granted the operational powers necessary for the management of the company and the group. In October 2018, Hitachi agreed to buy Elliot Management's remaining 32% shareholding. Hitachi subsequently made a takeover offer for the remaining shares. On 22 January 2019 Hitachi announced it had gained a 99% shareholding.


Since 2019: Hitachi Rail STS

Ansaldo STS was officially delisted from
Borsa Italiana Borsa Italiana () or Borsa di Milano (), based in Milan at Palazzo Mezzanotte, Mezzanotte Palace, is the Italy, Italian stock exchange. It manages and organises domestic market, regulating procedures for admission and listing of companies and i ...
and renamed Hitachi Rail STS on 30 January 2019. In 2024, Hitachi Rail and MERMEC signed a put option agreement for the sale of Hitachi Rail’s main line signalling business in France and its signalling business units in Germany and the UK.


Operations

The company's operations are split into two divisions: Freight Rail and Passenger Railway / Mass Transit. Major projects involving Hitachi Rail STS and its predecessor companies include the Copenhagen Metro, where it is responsible for the provision of
rolling stock The term rolling stock in the rail transport industry refers to railway vehicles, including both powered and unpowered vehicles: for example, locomotives, Railroad car#Freight cars, freight and Passenger railroad car, passenger cars (or coaches) ...
,
Automatic Train Control Automatic train control (ATC) is a general class of train protection systems for railways that involves a speed control mechanism in response to external inputs. For example, a system could effect an emergency brake application if the driver do ...
,
SCADA SCADA (an acronym for supervisory control and data acquisition) is a control system architecture comprising computers, networked data communications and graphical user interfaces for high-level supervision of machines and processes. It also cove ...
and other services; and signalling on LGV Est in France and
High Speed 1 High Speed 1 (HS1), officially the Channel Tunnel Rail Link (CTRL), is a high-speed railway linking London with the Channel Tunnel. It is part of the line carrying international passenger traffic between the United Kingdom and mainland Euro ...
in the
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ...
. The company also managed projects for signalling, train control and/or maintenance for the Metro systems of
Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
,
Los Angeles Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, ...
,
Rome Rome (Italian language, Italian and , ) is the capital city and most populated (municipality) of Italy. It is also the administrative centre of the Lazio Regions of Italy, region and of the Metropolitan City of Rome. A special named with 2, ...
,
Milan Milan ( , , ; ) is a city in northern Italy, regional capital of Lombardy, the largest city in Italy by urban area and the List of cities in Italy, second-most-populous city proper in Italy after Rome. The city proper has a population of nea ...
,
Hong Kong Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the wor ...
,
Naples Naples ( ; ; ) is the Regions of Italy, regional capital of Campania and the third-largest city of Italy, after Rome and Milan, with a population of 908,082 within the city's administrative limits as of 2025, while its Metropolitan City of N ...
,
Shenyang Shenyang,; ; Mandarin pronunciation: ; formerly known as Fengtian formerly known by its Manchu language, Manchu name Mukden, is a sub-provincial city in China and the list of capitals in China#Province capitals, provincial capital of Liaonin ...
,
India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
, and
Thessaloniki Thessaloniki (; ), also known as Thessalonica (), Saloniki, Salonika, or Salonica (), is the second-largest city in Greece (with slightly over one million inhabitants in its Thessaloniki metropolitan area, metropolitan area) and the capital cit ...
.


High-Speed rail

Hitachi Rail STS commissioned the first
high-speed rail High-speed rail (HSR) is a type of rail transport network utilising trains that run significantly faster than those of traditional rail, using an integrated system of specialised rolling stock and dedicated railway track, tracks. While there is ...
signaling system (TVM) for the first LGV line in France, in 1981, connecting
Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
and
Lyon Lyon (Franco-Provençal: ''Liyon'') is a city in France. It is located at the confluence of the rivers Rhône and Saône, to the northwest of the French Alps, southeast of Paris, north of Marseille, southwest of Geneva, Switzerland, north ...
. In 2005, Hitachi Rail STS set another landmark with the first high speed line running on ERTMS Level 2 (European Rail Traffic Management System) between
Rome Rome (Italian language, Italian and , ) is the capital city and most populated (municipality) of Italy. It is also the administrative centre of the Lazio Regions of Italy, region and of the Metropolitan City of Rome. A special named with 2, ...
and
Naples Naples ( ; ; ) is the Regions of Italy, regional capital of Campania and the third-largest city of Italy, after Rome and Milan, with a population of 908,082 within the city's administrative limits as of 2025, while its Metropolitan City of N ...
, Italy. As of 2013 over half of all high speed lines worldwide (excluding
Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...
) are equipped with Hitachi Rail STS signaling.


Main Lines and freight

In Europe, the company played a key role in the development and upgrade of ERTMS (level 1 and 2), leading to the interoperability of different countries' rail networks. In the
United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
Hitachi Rail STS has supported the freight rail industry, dating back over 130 years. Hitachi Rail STS has products and systems with every
Class I railroad Railroad classes are the system by which Rail freight transport, freight railroads are designated in the United States. Railroads are assigned to Class I, II or III according to annual revenue criteria originally set by the Surface Transportatio ...
in North America. In
Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
Hitachi Rail STS has been in business for more than 20 years and has most recently developed automated train management technology (AutoHaul) to support fully autonomous heavy-haul, long-distance rail systems and advanced signalling and telecommunications systems featuring satellite positioning, data radio & WiMax.


Mass transit

Hitachi Rail STS's transit control systems build upon traditional signaling technology, i.e.: ; Communications Based Train Control (CBTC) :A continuous, two way radio-based communication between wayside and carborne controllers used to determine train position and enforce movement authorities. The communication between adjacent zones, interlockings and carborne controllers supports safe optimized headways and maximizes system capacity. ; Driverless Automatic Train Control (ATC) :Driverless ATC. Hitachi Rail STS delivered the first fully driverless train control equipment to be certified under the strict European
Cenelec CENELEC (; ) is responsible for European standardization in the area of electrical engineering. Together with ETSI (telecommunications) and CEN (other technical areas), it forms the European system for technical standardization. Standards harmon ...
safety standards on the
Copenhagen Copenhagen ( ) is the capital and most populous city of Denmark, with a population of 1.4 million in the Urban area of Copenhagen, urban area. The city is situated on the islands of Zealand and Amager, separated from Malmö, Sweden, by the ...
(Denmark) Metro in 2002, winning subsequent contracts in
Rome Rome (Italian language, Italian and , ) is the capital city and most populated (municipality) of Italy. It is also the administrative centre of the Lazio Regions of Italy, region and of the Metropolitan City of Rome. A special named with 2, ...
,
Milan Milan ( , , ; ) is a city in northern Italy, regional capital of Lombardy, the largest city in Italy by urban area and the List of cities in Italy, second-most-populous city proper in Italy after Rome. The city proper has a population of nea ...
,
Brescia Brescia (, ; ; or ; ) is a city and (municipality) in the region of Lombardy, in Italy. It is situated at the foot of the Alps, a few kilometers from the lakes Lake Garda, Garda and Lake Iseo, Iseo. With a population of 199,949, it is the se ...
,
Thessaloniki Thessaloniki (; ), also known as Thessalonica (), Saloniki, Salonika, or Salonica (), is the second-largest city in Greece (with slightly over one million inhabitants in its Thessaloniki metropolitan area, metropolitan area) and the capital cit ...
,
Riyadh Riyadh is the capital and largest city of Saudi Arabia. It is also the capital of the Riyadh Province and the centre of the Riyadh Governorate. Located on the eastern bank of Wadi Hanifa, the current form of the metropolis largely emerged in th ...
,
Taipei , nickname = The City of Azaleas , image_map = , map_caption = , pushpin_map = Taiwan#Asia#Pacific Ocean#Earth , coordinates = , subdivision_type = Country ...
, and
Honolulu Honolulu ( ; ) is the List of capitals in the United States, capital and most populous city of the U.S. state of Hawaii, located in the Pacific Ocean. It is the county seat of the Consolidated city-county, consolidated City and County of Honol ...
. ;Conventional metros and light rail :Hitachi Rail STS provides technology for traditional track circuit profile-based metro systems to "drive-on-sight"
street running A street running train is a train which runs on a track built on public streets. The rails are embedded in the roadway, and the train shares the street with other users, such as pedestrians, cars and cyclists, thus often being referred to as ru ...
light rail Light rail (or light rail transit, abbreviated to LRT) is a form of passenger urban rail transit that uses rolling stock derived from tram technology National Conference of the Transportation Research Board while also having some features from ...
systems to the major urban centers across the United States, Europe and other countries.


Planning and supervision

Computer Aided Dispatching (CAD) system was developed by Union Switch & Signal at the Union Railroad Company in Duquesne, Pennsylvania, in 1966 starting the computer-aided dispatching in the industry. Today Hitachi Rail STS adopts the Optimizing Traffic Planner as a late successor of the 1966 CAD. OTP is an advanced planning engine that solves complex logistics problems under changing operating conditions to maximize capacity and increase average velocity. Computational agents respond in real-time to updated CAD and field data, issuing new movement plans that account for current conditions and all operating rules and constraints. Applied off-line, OTP can minimize inherent conflict within a new timetable before the timetable is used in service. Applied on-line, OTP can produce significant capacity gains across a large freight oriented network.


Components

The company provides on-board and wayside components and systems, such as interlocking (MicroLok II), track circuits, switch machines (M-style), traditional and LED signals, Eurobalise, vital relays, hot wheel detectors, highway crossing mechanisms.


See also

* Hitachi Rail Italy


References

{{DEFAULTSORT:Hitachi Rail Sts Companies formerly listed on the Borsa Italiana Engineering companies of Italy Gio. Ansaldo & C. Italian brands Leonardo S.p.A. Manufacturing companies established in 2006 Multinational companies headquartered in Italy Railway signalling manufacturers 2006 establishments in Italy Hitachi Rail