The Hellenic Railways Organisation or OSE is the Greek national railway company which owns, maintains and operates all railway infrastructure in Greece with the exception of Athens’ rapid transit lines. Train services on these lines are run by TrainOSE S.A., a former OSE subsidiary. In addition, OSE owns and maintains the rolling stock used by TrainOSE and maintains preserved special rolling stock, withdrawn locomotives and railcars.n 2004, a new line was inaugurated running from Acharnai (SKA) junction to Athens International Airport “El Venizelos”. Between Iraklio and Koropi, the new line runs along a closed motorway (Attiki Odos), along the general direction of the old Lavrio line, but displaced east. The line is double-track and electrified with 25;kV overhead catenary. When the planned extension from Koropi to Lavrio is built, it will probably follow the old Lavrio line more closely. Work in progress between Corinth and Kiato, April 2007. This section is now in use.
The new Corinth line branches off at SKA and runs west into Elefsis and the Megara Plains. The line passes through impressive tunnels and bridges in the “Kakia Skala” area, north of Agioi Theodoroi; while crossing the Corinth Canal over a new bridge and then into the New Corinth Station. The line extends up to the village of Rodadaphni. Currently, the service is carried by DMU trains between Kiato and Aigio, where passengers can change to TrainOSE bus services to Patras. Passengers in Kiato can choose also TrainOSE bus services to reach Patras. There is work in progress to extend the line to Rio (Bozaitika area), while plans exist to extend the line to Patras. Electrification of the line up to Rio is in plan as well.