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Comment by fragmede

17 hours ago

Because the traffic isn't known to you but it is to Google. I could take two routes, one is faster depending on circumstances, and Google knows those circumstances.

Is it really faster though?

All you have now is two routes with a roughly equal amount of traffic on.

One of those routes will be a massive detour.

  • How do you know those routes have a roughly equal amounts of traffic? Or that there’s only two routes? I usually see at least three possible routes with my commute (with some forking), and at least one shortcut. During heavy traffic one optimized route can at least save 10-15 minutes than the slower one(s).