FLOW Consortium has been awarded a contract to operate and maintain Lines 3,4,5 & 6 of the prestigious Riyadh Metro Project is the Operations & Maintenance contractor of Riyadh Metro lines 3, 4, 5 & 6 on behalf of the Royal Commission of Riyadh City. The consortium consists of the following leading international companies; which have an demonstrated track record in operating and maintaining metro lines and rail in general: Ansaldo STS / Hitachi Ferrovie Dello Stato Italiane (Italian Railways) Alstom