Tickets cost 150drs and must be bought from a kiosk or at special stands in main squares and at some main bus terminals. They are sold individually or in bundles of 10 and must be validated by a machine on the bus. Buses and trolleys run every 10 to 30 minutes and can be stopped by waving your hand. The Orange Buses take you to the countryside of Attiki outside Athens and it's suburbs. Tickets are sold on board and don't need to be validated.
Prices vary according to destination.
The final destination is written on the front of each bus. The Green Bus leaves from Filellinon street near Syntagma and takes you to Pireaus and Kalithea. The tickets are the same as the blue bus and the Trolleys. They run 24 hours a day and leave every 6 minutes during the daytime.