To anticipate the difficulties associated with this closure, the first three concrete measures on public transport will be put in place:
- Reinforcement of Tram 6: Île-de-France Mobilités is asking RATP to mobilise two reserve trains in order to meet the need for additional transport on the T6 tramway, in particular to increase the frequency of a tram every 4 minutes during peak hours and to extend this morning and evening rush hour by at least 1 hour and 30 minutes,
- Reinforcement of the bus network: a crisis unit will be set up at Île-de-France Mobilités to ensure very close monitoring of the evolution of the traffic of the bus network in the sector and to strengthen if necessary the feeder offer to the stations of the RER B and RER C, lines N and U of the Transilien, in particular on the Phébus network and on the RATP bus lines in this sector,
- Free carpooling: carpooling will be financed by Île-de-France Mobilités, which will pay the user's share throughout the closure period in the departments concerned (Yvelines, Essonne and Hauts-de-Seine) with the 8 partner platforms (Blablalines, Clem', Covoit'ici, IDVROOM, Karos, Klaxit, Ouihop, Roulez Malin).

