Re: Zumo GPS question
At risk of stating the obvious, if all variables are identical, the routes will be calculated identically. Having said that, there are LOTS and LOTS of variables. Settings, preferences, avoidances, firmware versions, map versions, which detail maps are loaded on the device (this doesn't apply to the Zumo, since it's preloaded with the entire US), and last but certainly not least, your physical location/position and orientation (direction the GPS thinks your facing). Yes, your orientation can make a big difference sometimes. Based on your position and the direction that the GPS thinks you're facing (I say thinks, because it must interpolate/estimate this until you actually move...aferwhich, it will "lock" onto a particular side of the street). So, given your position, and what side of the street the GPS thinks you're on, the algorithms begin their work at determining the best route. In short...if every variable is identical, the route will be identical too. If it's not identical, then something is different between the devices. IT might be something very subtle, but there is a difference in something.
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