The subject of this project is the complete implementation of the extension of the 3kVss overhead contact line in the perimeter of the St8 and partly also the St5 overhead contact line. This concerns the complete control of the rail track of the transfer station ‘Vlečky ORLEN Unipetrol RPA, Litvínov’ on the track contact between the Litvínov siding and the SŽ railway track, in total above 9 tracks (No 94J, 95J, 96J, 97J, 98J, 99J, 100J, 102J and 121J), as well as the connecting tracks 94aJ in full length and the ‘marginal curve’ of the end of track No 37/38 SŽ at St5).