Data Stories: Location, Location, Location Data

Tracking Foot Traffic with Wi-Fi

MIT Student project 

This student project at MIT tracked pedestrian patterns all over campus using devices that pick up Wi-Fi probe requests from smartphones. How might you use this kind of granular location data to improve congestion?


Optimizing Grocery Delivery

Instacart algorithms 

The grocery delivery service Instacart uses GPS data to track and optimize their shoppers’ workflow. Learn about the applicable algorithms and visualizations in this blog post.


Why Don’t American Roads Have Roundabouts?


Roundabouts, also called traffic circles, are less common in the U.S. than in many European countries. These charts show how common they are and where in the country you’re likely to come across them.

About the Author

Lindsay Stares is a production editor at TDWI. You can contact her at

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