The subject of the project is the modernisation of the siding's signalling equipment, which consists in the replacement of the technical infrastructure lines and the network lines of signalling technology and maintenance work. The present project addresses the modernisation of the signalling facilities at the ‘Horní nádraží’ site. The upper station, which is the most important station for the applicant, as it is the most important of all the stations operated by the applicant and contains the largest volumes of traffic.