Siemens Mobility and SBS Transit have agreed to extend their Long-Term Service Support (LTSS) contract for the signaling system of Singapore’s Downtown Line (DTL). The new agreement will last 22 years, from January 1, 2026, to December 31, 2047. It covers obsolescence management, technology upgrades, and security improvements for the fully automated metro line that spans about 44 kilometers with 37 stations.
Elmar Zeiler, CEO of Siemens Mobility Customer Services, stated: “We are very pleased to expand our partnership with SBS Transit. 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.”
This contract builds on a previous LTSS arrangement awarded in May 2024. That earlier agreement focused on spares support, technical assistance, and monitoring for obsolete components. Together, these contracts set up a long-term framework where Siemens Mobility provides lifecycle management services as the original equipment manufacturer for DTL’s signaling system. The goal is to maintain safe and reliable operations through 2047.
A key part of the new contract is shifting from reactive to proactive obsolescence management. Siemens Mobility will identify both current and future issues affecting signaling subsystems before they become problems. Measures include evaluating necessary redesigns at subsystem or component levels and introducing qualified replacement parts into existing equipment. The company will also monitor component lifecycles continuously and adjust spare parts inventories as needed to avoid disruptions.
Additionally, the service contract includes regular updates to meet changing security requirements throughout its duration. Siemens Mobility will review system performance regularly to ensure compatibility of new hardware or software with local operations without affecting current functions.
By keeping the DTL signaling system consistent and updated over time, commuters are expected to benefit from dependable public transport service.