- Providing school transportation in the region.
- Providing services for isolated communities.
STIHS provides school services to the towns of Collonges-sous-Salève and La Roche-sur-Foron through its Touriscar network, under contract from the Haute-Savoie region and the local transit authorities.
It operates the intercity service in the region of France neighboring Geneva, and one regional route for students. It also offers services to ski stations and demand-responsive transport. Altogether, four regular lines and 19 school routes are serviced by 28 vehicles that travel 1,246,110 km every year, carrying 514,541 passengers.