Keolis, a subsidiary of SNCF, is proposed to operate the future lines 16 and 17 of the Greater Paris metro. The choice of operator must be confirmed in a vote of IDFM's board of directors on May 30.

The contract also covers the operation of the extensions of the two lines, scheduled for 2028, from Clichy-Montfermeil to Noisy-Champs for line 16 and from Le Bourget airport to the Parc des Expositions for line 17.