The Nicaraguan city of Managua had a problem. They had 1,670 kilometers of bus routes split across 45 different lines, but no map of this network.
To try and rectify the situation, the citizens of the city took the initiative and set out to develop the first bus network map in the whole of Central America.
The residents began using OpenStreetMap, with around 150 regular bus users teaming up to map the routes and stops of the city.
Their effort is now available online, with the data behind the map available for downloading and adapting by any fellow travellers.
Crowd-based Public Transit Data
A similar venture has been recently undertaken in Mexico City. The city is the largest urban agglomeration on the American continent, and as such transportation is a major issue.