The object of the project is the reconstruction of the railway line No. 130 in the section Oldřichov u Duchcova – Bílina. It is a two-track national line included in the TEN-T electrified DC traction system 3 kV. The aim of the construction is to increase the line speed, increase traffic safety, mitigate the impact of irregulars in transport by banalising line signalling equipment and thus increasing the quality of the railway infrastructure. Adjustments will be made for passengers to improve comfort and safety.