GrasB said:If it looks wrong, it probably is. You can do stupid things with maps to, fords that are deeper due to rain, roads that are barely passible with 4x4s but marked as unclassified roads on the map etc.
Personally I have mine in map top-view mode & turn the sound off most of the time, I'm glancing at it for place names as a target then go by the road signs. I've had a fair few pax be astounded that I've completely ignored the sat nav. I even had someone completely ignore a perfect standing half donut in the lotus & comment that the sat-nav said we should go down that road... not with 135mm ground clearance you don't
i dont' like going through fords as i once went through one and it caused a massive wall of water as i hit it, a massive deluge poured in through the window and when i got home i discovered that it had knocked the front reg plate off! went back to find it but wasn't there, had to get another one from halfords