Tro-Tro: Transport for the People by the People: a Tro-Tro is a general term for any public transportation vehicle other than a bus or taxi that is designed to carry many people. The origins of the name Tro-Tro is that Ga language word "tro," which means three pence (pence being the penny coins used during Ghana's colonial days). In the colonial days, the mass transit vehicle charged passengers three pence per trip, and thus were referred to as "Tro-Tros," and the name have struck ever since. The Tro-Tro system also works around a tenet central to Ghanaian society: waiting. There's no schedule and no map outlining routes. You just have to wait at the side of the road for the right one to come along. Reference: http://www.ghanaweb.com/GhanaHomePage/NewsArchive/photo.day.php?ID=76087