Signaling X: Proof of Next‑Generation Signaling for Cities
Debuting in mass transit at the Singapore Rail Test Center Signaling X introduces a future-proof, cloud-ready signaling platform for urban mobility, demonstrated in live Communications-Based Train Control (CBTC) operation.
Mission: Cloud-Ready Signaling for Modern Challenges
The project set out to prove a signaling approach that boosts metro capacity and reliability while providing energy savings as well as guaranteeing safety and security. Â
Smooth and streamlined migration, preserved safety
To enable Signaling X for Singapore, safety relevant (SIL4) CBTC and interlocking applications with well-proven and mature functionalities were seamlessly migrated from the existing system onto the digital Distributed Smart Safe System (DS3) platform running on commercial off-the-shelf (COTS) servers while the signaling logic remained unchanged. It showed that a smooth switchover between a conventional system and the next generation of CBTC with Signaling X is quick and easy while ensuring compatibility and operational excellence.
In Singapore we demonstrate how Signaling X combines operational continuity with innovation, offering a future-proof system with advanced functionalities and benefits, such as full hardware independence, enabling an increase of the operator's operational efficiency by up to 20%. By decoupling hardware and software allows updates to be applied without modifying the safety application or invalidating the safety case. This feature enables remote software patches during operation to minimize downtime and ensure highest security with up to 100% uptime. Overall, the demonstration in Singapore confirmed that Signaling X delivers enhanced flexibility, scalability, and maintainability for operators to address current and future operational as well as global challenges.
The future is now
The groundbreaking live demonstration in November 2025 presented train operations, fully controlled by SIL4 CBTC signaling logic, running on commercial off-the-shelf (COTS) servers. The event highlighted the system's unmatched availability and advanced security concept, ensuring increased operational efficiency. It also showed how existing investments were safeguarded by preserving the untouched signaling logic, while introducing the next generation of CBTC technology. This achievement exemplifies the seamless integration of innovation and operational excellence with future-proof solutions.
How Signaling X boosts urban mobility
Safety-critical functions run on COTS hardware with our DS3 platform. The result?
Up to 20% higher operational efficiency
- Reduced hardware
- Harmonized equipment
- Less maintenance requirements
15% CAPEX savings
- 80% reduction in hardware space
- Minimized outdoor equipment
- Reduced cabling
Up to 100% uptime
- Supported by advanced geo-redundancy
- Robust cybersecurity measures
- Flexible IT security patches
Our groundbreaking solution has already demonstrated its reliability in mainline applications as a globally proven platform with a strong track record. Today is the first live showcase in a CBTC mass transit test setting, and we are grateful to MSI Global for partnering with us to present Signaling X.
This project represents a major milestone for the rail industry and marks the introduction of Signaling X in a mass-transit environment. For details on the November 2025 launch event, please see the press release.
Signaling X whitepaper in collaboration with Railway Gazette
This Railway Gazette whitepaper explores how cloud innovation is shaping the next generation of digital rail by enhancing performance and reliability while maintaining the highest level of safety across complex rail networks, such as cities and countries.Â
