Fibre optic systems for Deutsche Bahn, railway station networks, and optical fibre infrastructure form the backbone of digital transformation in German rail transport – with 18,500 km of fibre optic cable deployed along routes and an expansion target of 33,400 km by 2027 . Fibre optic systems for Deutsche Bahn, railway station networks, and optical fibre infrastructure form the backbone of digital transformation in German rail transport – with 18,500 km of fibre optic cable deployed along routes and an expansion target of 33,400 km by 2027 . Railway monitoring has become increasingly vital as networks face growing demands track availability, operational safety, asset reliability, capacity, and infrastructure resilience. AP Sensing's rail solutions address these objectives through advanced Distributed Acoustic Sensing (DAS), Distributed. We offer medium and low-voltage power cables, communication cables (also with optical fibre), and control and signalling cables and a full range of products ranging from central and distributed architectures, to CBTC, ETCS and interlocking technology. We offer medium and low-voltage power cables. Distributed acoustic sensing can be used to analyze vibrations in fiber optic cables alongside railway tracks to detect infrastructure problems, such as faulty sound barriers lining the tracks. This article is part of our exclusive IEEE Journal Watch series in partnership with IEEE Xplore. Rail. Continued investment has delivered a wide spectrum of specialised railway' cable solutions: from Medium voltage & High voltage cable for connection to substations and switchgear, Data & Telecommunication Cable (copper & fibre optic), Signalling Power & Control cables, OLE cable, Track Feeder cable. The Future Railway Mobile Communication System (FRMCS) is the successor to the GSM-R (Global System for Mobile Communications – Railway) and represents the next generation of mobile communication systems for railways.