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Press Release08 December 2025Siemens AGMunich
Siemens and SBS Transit extend service for Singapore’s Downtown Line signaling
Siemens Mobility and
SBS Transit have announced the extension of the ongoing Long-Term Service Support
(LTSS) contract for the signaling system of Singapore’s Downtown Line (DTL), one
of the world’s most reliable metro systems and a key element of the
city-state’s high-capacity public transport network. The outcome-based
agreement runs for 22 years, from January 1, 2026, until December 31, 2047, and
covers obsolescence treatment, technology refresh and upgrades, including
security-related measures. The fully automated metro line spans around 44 kilometers
with 37 stations.
“We are very pleased
to expand our partnership with SBS Transit,” said Elmar Zeiler, CEO of Siemens
Mobility Customer Services. “By combining lifecycle services with proactive
obsolescence management, targeted technology refresh and security upgrades, we ensure
that the signaling system remains technically up to date, highly available and
fully integrated into the existing infrastructure over more than two decades.”
The new contract
builds on an LTSS arrangement awarded in May 2024, which covers spares support,
technical support and obsolescence monitoring. Together, these agreements
establish a long-term framework under which Siemens Mobility, as original
equipment manufacturer for the DTL signaling system, provides lifecycle
management services that contribute to
safer and more reliable operations through 2047.
Proactive obsolescence management: safeguarding a critical
asset
A central element of
the contract is the transition from reactive to proactive obsolescence
management. All currently known and foreseeable obsolescence affecting the DTL
signaling subsystems and components will be identified in advance and addressed
through structured measures. This includes the assessment and definition of
required development and qualification work for suitable redesigns, the
implementation of redesigns at subsystem or component level, and the
introduction of qualified replacement parts into applicable signaling
equipment. Siemens Mobility will continuously monitor component lifecycles and
adapt spare parts inventories accordingly. Subsequently, proactive
obsolescence monitoring will be adopted to ensure long-term operational
supportability, supported by adequate spare parts inventory and continuous
monitoring of component lifecycles to prevent future disruptions. By
maintaining the consistency of the DTL signaling system, commuters benefit from
a dependable and efficient public transport network.
Long-term resilience of the network
The new service
contract also includes structured system updates to address evolving security
requirements over the contract period. Siemens Mobility will review system
performance and configuration on an ongoing basis to ensure that new or updated
hardware and software components are compatible with the local operating
environment and can be integrated without compromising existing functionality.
For this press release
Siemens Mobility is a separately managed company of Siemens AG. As a leader in intelligent transport solutions for more than 175 years, Siemens Mobility is constantly innovating its portfolio. Its core areas include rolling stock, rail automation and electrification, a comprehensive software portfolio, turnkey systems as well as related services. With digital products and solutions, and the use of industrial AI, Siemens Mobility is enabling mobility operators worldwide to make their infrastructure intelligent, increase value sustainably over the entire lifecycle, enhance passenger experience, and guarantee availability. In fiscal year 2025, which ended on September 30, 2025, Siemens Mobility posted revenue of €12.4 billion and employed around 43,400 people worldwide. Further information is available at:
www.siemens.com/mobility