The first contract, valid for eight years, begins on 1 August 2021. The bus network, consisting of 80 lines, will serve an area of 200,000 inhabitants in 24 municipalities of the Grand Paris Seine et Oise intercommunal district.
The second contract, valid for five years, begins on 1 January 2022. The bus network features 36 lines serving an area of 340,000 inhabitants comprising the municipality of Argenteuil and 11 municipalities in the eastern part of the Saint-Germain Boucles de Seine conurbation.