Everyday i say thanks to Google maps for saving my time. But did you know how Google calculates traffic and then show you blue and red lines on your google map app?

So Google Maps bases its traffic views and faster-route recommendations on two different kinds of information:
1. Historic Data
2. Real Time Data

Historical data is the average time it takes to travel a particular section of road at specific times on specific days.

Real-Time data is sent by smartphones (GPS) that report how fast cars are moving right then.When Smart phone users turn on their Google Maps app with GPS location enabled, the phone sends back bits of data, anonymously, to Google that let the company know how fast their cars are moving.

Google Maps continuously combines the data coming in from all the cars on the road and sends it back by way of those colored lines on the traffic layers.

Historical data are important because it’s hard to acquire enough real-time information to make traffic forecasts. Think of the complications involved. There aren’t that many people with smartphones driving any given road at a given moment, and not all of them will have enabled their data-sharing software.

In addition, some of the phones will be red herrings with respect to traffic. Some, for example, will be in the pockets of walkers or in the baskets of bicycles. Others might be in a car that has pulled over or is looking for a parking spot.

When you plug a destination into your smartphone, the program’s first estimate of travel time is based on this historical information. Only then does it begin to add in information from users traveling your route right now.

Hence by using realtime data from smartphones and historic data, google maps is able to show traffic situation and faster route recommendations.

So that’s all for now hope you guys learn something from this blog. And if you are interested in Space science and you can checkout our E-books store. Click here

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