How does the live traffic system in sat navs work?

Tom Tom Sat Nav

Question:

How does the live traffic system in sat navs work? 

Bavel, East Ham  

Answer:

Name:  Rob, Rochester

Qualification: has been fitting in car technology since 1994.

Answer:

In the late nineties and early noughties mobile phone networks teamed up with sat navs so that they would be sent signals depending on the locations of mobile phones. So, if a lot of mobile phone users from one network are sat in a que that information is received through signal masks therefore tracking phone signals. 

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