Then it sounds like they have data tracking drivers even off the main roads: homes, driveways, small residential streets, parking lots, office buildings. IOW it sounds like they could have done a better job at anonymizing it by truncating driver paths that are off the main roads and highways to only keep data relevant to their study.
They study high traffic density, so by definition, irrelevant data is data where traffic is under a certain density, which would automatically exclude private areas (homes, driveways, etc).
Ah, unexplained downvotes on what I believe is a reasonable point I make...
At the very least, if data cannot be made anonymous, and can so easily be associated to persons, then this is an argument that they should have never collected it without my consent in the first place. This would be an invasion of my privacy.
