Re: The worst my Garmin has ever done
The algorithms don't weight "staying on the same road" or "keep heading in the same general direction" strongly enough, I reckon.
The Toyota system isn't actually that bad, but as I said, it has an annoying tendency to lock your next navigational waypoint if you deviate from the path. But it will recalculate the whole route some times. It's a bit weird like that.
So if it was intending to tell you to stay on the motorway at Junction 12, and you came off at Junction 11, onto a parallel A road that next meets the motorway at Junction 15, it will often attempt to send you back to Junction 11 rather than Junction 15, because J11 is closer to J12.
Biting the hand that feeds IT
