From Monday 29 December 2025 to Sunday 4 January 2026 inclusive, your lines will change their schedules with the exception of the following lines:
- 4520, 4550, 4552, N123, N131 and the Evening Bus
Not all regular school lines will run (lines starting with 4570 to 4584).
Find all the news of the Cœur d'Essonne territory on the X account@CoeurEs_IDFM