RATP Dev is going to have to wait to take the reins on Metro Line 3: The National Authority for Tunnels (NAT) has postponed handing over the operation of Cairo Metro Line 3 to French transport firm RATP Dev until the middle of the year while the two sides finalize the details of the contract, Al Mal reports, citing people familiar with the matter. RATP Dev — short for Régie Autonome des Transports Parisiens — was due to take over management of the line for a 15-year term at the end of February after it sealed a EUR 1.14 bn agreement with the authority in September.