• Offering customer-friendly, reliable, comfortable and modern transportation across all twelve municipalities in the Saint-Quentin-en-Yvelines conurbation.


million passengers per year


bus routes and 11 schoolbus routes


municipalities serviced


In order to ensure the best possible travel conditions for all twelve municipalities in the Saint-Quentin-en-Yvelines conurbation outside of Paris and to promote local economic growth, SQYBUS – an RATP Dev subsidiary founded in 1975 – offers modern and comfortable transportation. Today, it operates the second-largest transportation system in the greater Paris region after the RATP.


Saint Quentin en Yvelines France Bus Mobility

"SQYBUS has supported the development and clustering of large companies in the region."

Laurent Schlaeintzauer
Former Deputy General Manager of the Grand Saint-Quentin business cluster

Learn More


Juan Lopez


Contact us

Related operations

Bus & Coach
Bus & Coach

Laon - France

A city bus that adapts to residents’ needs

Bus & Coach
Bus & Coach

Aix-les-Bains - France

Making transportation and mobility accessible to all in just three years

Bus & Coach
Bus & Coach

Charleville-Mézières - France

Transport, an essential means of sustaining a lively community