TETRA offers a complete, resilient and totally secure, service-rich communications solution for rail. Its reliability, availability and security are determining factors in its success. Sepura’s applications and systems for critical voice and data – including surveillance solutions – drive efficiency, promote safety and give fast access to critical information when it is most needed. Locating, managing and protecting staff who work indoors can pose a significant challenge; Sepura can maximise safety with features such as man down, lone worker and GPS tracking even whilst underground.