The Athens Urban Transport Organization (OASA) is responsible for managing public transportation in Athens, Greece. It oversees various modes of transport, including buses, trolleys, and the Athens Metro, ensuring efficient and reliable services for residents and visitors. OASA aims to improve urban mobility and reduce traffic congestion in the city. It operates a comprehensive network that connects key areas, making it easier for people to travel within Athens and its suburbs. The organization also focuses on sustainability and enhancing the overall quality of public transport services.