I understand mapping the shortest routes, tollways vs non tollways, ect but how is programming like google maps able to determine the amount of time your commute will take due to traffic patterns and congestion?
In: 13
All the other phones in the road are sending data in real time. Combined with your phone knowing how fast you are driving it goes a long way towards an accurate estimate.
People have done experiments like taking a wagon and filling it with phones. They walk slowly down an empty road and it appears as a traffic jam on other phones.
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