Signalling Systems Experience Across Legacy and Modern Platforms
Rail networks rarely operate on a single signalling system. Across routes, regions and international projects, infrastructure often reflects decades of technological evolution. Legacy mechanical installations sit alongside early electronic interlockings, modern computer-based systems and digital control environments.
For organisations delivering renewals and upgrade programmes, understanding that variation is critical.
OSL Global delivers comprehensive signalling services with experience across a wide range of railway control systems and technologies.
OSL’s Experience Across Generations of Interlocking
Our experience includes both legacy and modern interlocking technologies, covering:
Mechanical and electro-mechanical systems, including RRI
Electronic and computer-based interlockings including SSI, ACC, Smartlock, Westlock, Microlok, VHLC and ElectrologIXS
Seltrac CBTC systems
Each platform carries its own design principles, data structures, testing methodologies and operational considerations. Working across these environments requires familiarity not just with the product, but with the engineering standards and assurance processes that govern them.
Railway Control Centre and Network-Level Systems
Signalling delivery does not stop at the interlocking.
Our experience also includes work within:
IECC, MCS and RCC control centre systems
Modular signalling systems
ERTMS environments
These systems operate at a network level, interfacing with route control, traffic management and wider operational strategies.
Supporting Mixed-Network Rail Environments
Mixed-network environments are common across the UK and internationally. Route upgrades, phased renewals and long-asset-life infrastructure mean that multiple signalling technologies often operate in parallel.
Experience across both legacy and modern platforms supports continuity during renewals, integration works and staged migration programmes. It also strengthens engineering understanding when interfacing new systems with existing operational assets.
If you are planning signalling renewals, upgrades or integration works and require experienced engineering support across varied system environments, get in touch.
