Siemens Mobility Bulgaria        Sofia, August 26, 2020

Siemens Mobility’s Inspiro trains and train control systems went into service in Sofia’s metro

  • The 3rd metro line was opened in the presence of the Mayor of Sofia Mrs. Yordanka Fandakova and the Executive Director of "Metropoliten" EAD Stoyan Bratoev
  • The Inspiro platform was developed with a special emphasis on sustainability

Siemens Mobility's modern Inspiro trains and train control systems have been officially put into operation for the needs of the passengers of the Sofia metro.


The trains and systems will serve the third metro line of the Bulgarian capital, which was opened today in the presence of the Mayor of Sofia Mrs. Yordanka Fandakova, the Executive Director of "Metropoliten" EAD Stoyan Bratoev, representatives of the management of Siemens Mobility Bulgaria, guests and journalists.


At the official opening at the Medical University metro station, the official guests had the opportunity to see for themselves the comfort and high reliability of the Inspiro trains during a demonstration ride with the new trains.

In March 2016 Metropoliten EAD commissioned a consortium consisting of Siemens Mobility and the Polish train manufacturer Newag for equipping the new metro line 3 in the capital of Bulgaria. The initial order was related to the first phase of this construction project for the first eight kilometers with seven stations and comprised the delivery of 20 Inspiro type metro trains along the automatic, CBTC-based train control system (onboard and wayside) Trainguard MT, the Trackguard Westrace MKII interlocking, Clearguard-ACM_200 axle counter system, the automatic train supervision system Controlguide OCS, the voice radio and data transmission system, the Power SCADA Sitras RSC system, the wayside digital communication network, and half-height platform screen doors for the stations.


Later it was extended with an option for ten more trains along with the related train control automation systems for five more stations. The last train will be delivered by April 2021.

"We are glad to offer our fellow citizens ang guests the opportunity to be transported with one of the most modern developments in the field of urban rail transport. The Inspiro platform was developed with a special emphasis on low energy consumption, optimized maintenance, passenger comfort, and environmental considerations. At the end of its service life, up to 95 percent of the rolling stock can be recycled“, said Kalin Ivanov, CEO of Siemens Mobility Bulgaria.


The Inspiro car bodies have been produced at Siemens Mobility' plant in Vienna, Austria, while the bogies come from the Siemens Mobility' plant in Graz. Final assembly, factory train testing, and static commissioning of the trains takes place at Newag's plant in Nowy Sacz, Poland.


The trains can travel at speeds of up to 80 kilometers per hour. Their floor is a weight-saving, sound-absorbent composite cork-aluminum plate. They also feature a highly a redundant traction and brake system (bogie-oriented), ensuring a high level of availability and electrodynamic braking almost down to standstill.

Siemens Mobility is a separately managed company of Siemens AG. As a leader in transport solutions for more than 160 years, Siemens Mobility is constantly innovating its portfolio in its core areas of rolling stock, rail automation and electrification, turnkey systems, intelligent traffic systems as well as related services. With digitalization, Siemens Mobility is enabling mobility operators worldwide to make infrastructure intelligent, increase value sustainably over the entire lifecycle, enhance passenger experience and guarantee availability. In fiscal year 2019, which ended on September 30, 2019, the former Siemens Mobility Division posted revenue of €8.9 billion and had around 36,800 employees worldwide. Further information is available at:


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