Transdev Sud Ouest ATCRB is a subsidiary of the Transdev group, responsible for operating urban and intercity routes on behalf of the Syndicat des Mobilités de l’Agglomération Pays Basque:

• 6 intercity routes on the Syndicat des Mobilités de l’Agglomération Pays Basque’s TXIK TXAK network on the retro-littoral, in co-contracting with Hiruak Bat. These 6 lines will be operated with HVO vehicles from January 2025.
• 2 urban lines on the TXIK TXAK network of the Syndicat des Mobilités Pays Basque Adour in Cambo-les-Bains and Itxassou. These 2 routes will be operated by electric minibuses from January 2025.
• private shuttles for Dassault employees.
• school transport on behalf of the Syndicat des Mobilités du Pays Basque and town halls.
• occasional, extracurricular and tourist services.