eli5 How does google maps show traffic congestion in real time? (and other related questions)

Question

1. Do they use satellite images?
2. are there other services that do the same thing?
3. How do they get the data about public transits?

In: Technology

Answer 1

>Do they use satellite images?
>are there other services that do the same thing?
>How do they get the data about public transits?

They might do all these things but I don’t see why they’d have to. They basically have real-time location data of everyone on this planet using an Android device or a Google app with location services. You don’t really need anything else to generate your own high-quality traffic data.