Bièvre bus network is now made up of eight routes from the former bus network Le Paladin, mainly serving the municipalities of Hauts-de-Seine including Antony, Châtenay-Malabry, Clamart, Le Plessis-Robinson and municipalities of Essonne including Massy, Verrières-le-Buisson and Wissous.

Due to the opening up of the competition of public transport in Île-de-France, Le Paladin changed to Bièvre on August 1, 2022, corresponding to public service delegation number 37 established by Île-de-France Mobilités.

A call for tenders was therefore launched by the organizing authority in order to designate a company that will succeed the operation of Transdev Bièvre Bus Mobilités for a period of eight years.

It was finally RATP Cap Île-de-France, via its subsidiary RD Bièvre, which was designated during the board of directors on October 12, 2021.

From June 26, 2023, the routes are renamed according to a new numbering system implemented by Île-de-France Mobilités.