Three new Colmar rail-road shunters delivered in South Korea to support railway logistics.
SRT has successfully commissioned a Colmar SL50E rail-road electric shunter at the underground railway depot of Songtan station, south of Seoul. Located 50 metres below sea level, this depot serves the Metropolitan Rapid Transit ‘Samsung-Dongtan’ line.
The Colmar SL50 is used by the Korea Railroad Corporation (Korail) – the leading national railway operator – at the pit wheel lathe, where railway carriage wheels are refurbished, to ensure safety and operational efficiency. The trains typically have 8 wagons, with a total mass of approximately 400 tonnes when empty.
The SL50E is engineered to operate efficiently in tight spaces, urban areas, and underground environments. Its electric drive has a lower environmental impact than diesel-powered alternatives, and ensures high maneuverability—essential for railway yards and maintenance workshops.
Following the commissioning of the SL50E, SRT delivered two additional Colmar shunters, the SL16RC and SL32E, to Unjeong railway depot, north of Seoul, to be used on the GTX-A high-speed line. Authorization is currently awaited to proceed with testing and full commissioning.
With Colmar rail-road shunters, SRT redefines railway logistics, focusing on efficiency, sustainability and technological innovation. The wide range of models meets diverse operational needs.
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SRT estará en InnoTrans 2026 en Berlín para presentar nuevas soluciones para la construcción y el mantenimiento de la infraestructura ferroviaria.
Two new Colmar SL230D rail-road diesel shunters have just left Italy for use on the Saudi Arabian rail network.
On 1st February 2025, SRT merged with Colmar Technik, completing the integration process that began in August 2023 with the acquisition.


