Question:  How do the radio stations and TV stations know when there are traffic jams? Are there sensors in the street itself? Do they all go to websites where all of the cameras we see on the signal lights are coordinated and the information goes to one place? Is there one centralized place where all of these people go to for their information? Do they have to call or go to all the different websites?  Is it true what you see on TV or in the movies how people can hack into one place and see ...


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