GVB Transport
GVB is the public transport company of Amsterdam. It transports about 1,000,000 people within the greater Amsterdam area every day, offering transport by tram, bus, metro and ferries. GVB transport company services not only the city of Amsterdam, but a number of nearby towns. The intricate network of public transport by road, water and railway, both at street level and underground, is linked to the Dutch Railway stations and regional transport systems.
URL: http://www.gvb.nl