The Organisation of urban Transportation of Thessaloniki (OASTH) is the biggest transport organisation of the city of Thessaloniki. The 604 buses of the organisation carry over 180 million passengers annually via 75 different bus routes within the greater area of the city.
OASA is the organisation of urban transportation of Athens, and includes buses and trams. Link Technologies SA has successfully designed and installed its system for managing the fleet of the Organization in over 2000 vehicles serving a population of 3 million. The OASA telematics project is the largest in Europe.