botach wrote:
Try an experiment - take a tape measure ( mine is 63mm square ) place it the same distance from your screen that you have in your car and see how much of your screen is masked.
Any excuse to take a break from packing up the house (moving day tomorrow, oh joy...). Apologies for the crap quality of the pics, and no laughing at my brand new state of the art satnav system - it's a one of a kind prototype honest, I shouldn't really be showing it to any of you just yet

It's also roughly the same size as the Tomtom 5/7/910 units, so fairly representative of the typical aftermarket satnav system being discussed in this thread.
Where only a complete muppet would stick their satnav...
...or an almost reasonable position to put it for someone my height or taller?
Note that the unit hasn't moved at all between these two photos, the ONLY change is in the position of the camera. The first pic was one of the failed attempts at capturing how much of my forward vision was blocked, the second pic is closer, but still slightly worse than reality - this would probably match my actual eyeline if I slumped down in the seat. So we go from a completely stupid location to one which isn't actually
that bad, just by moving the camera (or, more pertinently, the position of the drivers head and eyes). In other words,
without evaluating each installation from the exact point of view of the driver, it's not that easy to judge how much forward vision they're losing - if any at all.
This would be roughly where I'd install such a unit if I didn't want to faff around with custom mounts - notice the near complete absence of blocked forward vision despite it sitting
on top of the dash...
If I got rid of the multi-function display, I could stick the unit here without too much hassle, but I like my trip computer too much!
Hmm, I think we have a winner - would most likely need a customised mount, but this location manages to avoid obscuring any of the existing instrumentation/controls and also avoids blocking any external vision - the only thing I can normally see out the obscured part of the side window is the mount for the wing mirror...
OK, so this isn't exactly a rigorous scientific experiment, but it does highlight something several of us have been saying - positioning of anything within the drivers field of vision is very much an individual thing. Granted, there are some positions which it's fairly safe to write off as being idiotic without having to experience them from the drivers point of view, but to dismiss all above-the-dash positions as being dangerous is just wrong.