- Operation of the public service delegation covering perimeter 4 in the administrative department of Oise, with Crépy-en-Valois as the central town.
- Supporting the development of the Oise network in the Hauts-de-France region to better meet passenger needs.
school bus routes
commercial bus routes reaching as far as Roissy Charles de Gaulle airport
journeys per day
This service offer is supported by RATP DEV through the collaboration of two group subsidiaries (RIO4 and Les Cars Charlot) and a partnership with a local carrier to ensure excellent coverage of the area. This network is taking on the challenges of improving service quality and passenger information in line with the energy transition.
RIO4 at the heart of mobility made in Hauts-de-France.