[silisili]

I love the idea, but the data seems a bit off. I tested it in my little city, where I'm < 14 minutes by car from the grocery. It's actually a little quicker, but I'm going by Google Maps estimates.

Setting a criteria of 15 mins by car, I'm far out in the gray. I'd have to drive a couple miles to even get in the red. It's only 6 miles away!

[cortesoft]

> It's only 6 miles away!

Six miles is like a 30 minute drive when I am

[silisili]

Been there, done that, hopefully not again :).

I was hoping 'little city' would have indicated, but I should have specified, there is never enough traffic here to move the estimates much. Speed limit is 35ish the whole way.

[WiggleGuy]

Yeah, different geo analysis providers have different weightings for travel time (turns, street density, etc). It can sometimes lead to inconsistencies like this, especially if they don't use GPS and proprietary data to correct things...

[DonHopkins]

TomTom maps (and probably others, I just worked for TomTom so know how theirs work) combine both real time traffic information, and road speed estimates based on data from users uploading their driving traces (with start and end locations removed to anonymize them), so it has a table of the average driving speed for all roads, on a per-hour and weekday/weekend basis, plus any real time traffic information it has, which it uses for route calculation and time estimation.