Anson Stewart is doing some really cool work with urban transportation systems . I recently came across this map he made of dala dala routes in Dar-es-Salaam. A few years ago I had talked to my friend about how we needed a map like this so that public transport systems in Tanzanian cities could innovate further. Maps provide locational data that is important for many reasons. A few of them are: Being able to also map out specific stops (and other travel-related spots) along routes; timing route/journey durations; providing distance/time information to travellers; and eventually even providing such information to city planners who can then dedicate specific space on roads just for public transport. Exciting stuff! Thanks Anson .