I hope everybody knows about GPS, Now suppose you are given collection of all the locations of all mobile users on traffic roads in a city via their mobile then with this knowledge one can estimate the number of users across the traffic in a given city with this one can query time it will take for him on average to reach his destination then he can plan his journey accordingly before hand.Also one can know about any traffic jams etc. Now this service can be provided by any global mobile network provider. The software required for this monitoring needs to be done on Mobile Service provider end.
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