Replacement of railway surface of track 1 of the Psary – Góra Włodowska route within the mileage section 170 850 km – 181 500 km, delivered within the project entitled ‘Modernisation of railway line no. 4 - E65, Grodzisk Mazowiecki – Zawiercie section’
Investor: PKP PLKS.A.
The project included the construction of a test track bed section for the performance of research regarding the technical adjustment of the Central Trunk Line at a velocity of V = 300/350 km/h and an acceptable pressure of 250 kN/axis against design and delivery assumptions, together with the gradeline design and index of track no. 1 adjustment within 178.500 - 181.500 km of the Psary – Góra Włodowska line no. 4 – E65, Grodzisk Mazowiecki – Zawiercie section (Central Trunk Line).
Period of delivery: 12th September 2008 - 30th September 2009