As a manufacturer of mission-critical control systems and recognized specialist for software engineering, Prvni Signalni, a.s. has been developing, manufacturing and delivering safety control systems for railways and trams – interlockings, line blocks, as well as level crossings since 1985. Prvni Signalni developed the very first all-electronic interlocking in Central and Eastern Europe. Our customers are railway infrastructure managers, from both public and private industrial sector, as well as a big signalling company for which we deliver subsystems or develop safety SW or the whole products. We make a point of constant innovation, best quality, superior customer support and outstanding service for our products and systems. Meanwhile Prvni Signalni, a.s. components and systems are successfully used on 3 continents in more than 20 countries.