FIXED TRANSPORT S.A.: The STA.SY. s.a. was established on 17 June 2011 as a subsidiary of the Athens Urban Transport Organization (OASA) and has as its main mission the execution of the transportation project in the city of Athens, with means that are shared in a stable orbit, Attiko Metro, Operation Company s.a. (AMEL) and TRAM s.a. The HSAP operated the line of Electric HSAP, Pireas - Kifisia (line 1), AMEL the lines 2 and 3 of Attiko Metro and the TRAM s.a. the tram lines of Athens. The STA.SY. continues its operation until today with the prospect of including the 4th line of the Metro in it.