Project line section is part of TEN-T Corridor V/B and Mediterranean Corridor. Design: Preparation of the construction plans for the reconstruction of the Szántód-Kőröshegy — Balatonszentgyörgy railway line (railway track construction, overhead line construction, construction of structures, road construction, public utilities, etc.) on the basis of the tender documentation and tender plans issued in the framework of the public procurement procedure. Execution: Szántód-Kőröshegy (bez.) — Restructuring of the section of Balatonszentgyörgy (excl.) railway line for speeds of 100/120 km/h and 225 kN axle load. Construction of a new second track section (traffic switch) in Balatonszemes — Balatonlelle upper station, connected to Balatonlelle upper station. Reconstruction of main tracks through station and switches and crossings, and reinforcement of preventive main tracks. Partial rebuilding of the overhead contact line system in line with track construction work. Reconstruction of railway structures, construction of railway track drainage. Construction of a broken artifact in the Fonyód area. Conversion of station and stop platforms to sk+ 55 cm high platforms, including Lepsény and Siófok stations. Upgrading of road and pedestrian crossings. Partial reconstruction of station and stationary high structures, including the facilities of the Lepsény — Szántód-Kőröshegy section. Implementation of additional drainage works in Balatonvilágos (loesswall) and Siófok- Szabadisóstó. Performing additional pavement construction tasks on the railway line section Lepsény — Szántód-Kőröshegy. Perform additional construction works in order to obtain Nobo certificate.