| http://www.w3.org/ns/prov#value | - ??? it can be used for almost any urban area. ???In many cities in the developing world, traffic congestion is a major problem, and travel surveys don???t exist,??? Gonz??lez said. ???So the detailed methodology we developed for using cellphone data to accurately characterize road network use could help traffic managers control congestion and allow planners to create road networks that fit a popul
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