The contract covers the execution of construction works and the preparation of a detailed design for the installation of railway traffic control equipment and railway telecommunications network equipment. The track system will be rebuilt on railway line 139 (communes: Tychy, Wyry, Kobiór, Pszczyna, Goczałkowice-Zdrój) and 148 (communes: Pszczyna, Suszec). As part of the works, drainage, engineering structures, small architecture buildings and platforms, noise barriers, road structures and crossings, as well as traction, electricity and sanitary networks will be rebuilt and expanded.