Coming from Inverness and now living in Glasgow, we frequently travel North and beyond to see my family. I've stopped counting how many time I've driven the A9 and been 'stressed' by the time it's over. Depending on the time of day we now tend to take the slightly slower A82 as opposed to a stressed out trip up the A9.
IMO I find it rather bemusing when people pass me a great speed on the dual bits and then cannie overtake for toffee and sit behind slower vehicles when the road is clear and safe for overtaking. Over the years I driven both roads rather swiftly and sometimes very sedately. I've learned that by sitting at a steady 60ish we often only take a few minutes longer than if I drive like a demon. That being said I would still seize most OT opportunities that came my way.
Again, IME and with the exception of the summer 'tourist' months I've found the A82 offers a far 'safer and less stressful' road to travel on. Why? IMO it's because the queues of traffic very seldom form in the same way as they do on the A9 and therefore there aren't as many 'frustrated' folk trying to find as many 'near death' experiences as they can on the A9. I enjoy driving and as above the A82 usually only takes a few minutes longer if I sit at a steady 60 AND take every OT opportunity.
Will average speed cameras work on the A9? IMO it depends on how what we mean by 'work'. My fear would be that the queues could just get worse because some less confident drivers may be less inclined to overtake the slower vehicles because of the cameras. IMO that could lead to even more frustration and in turn result in more daft overtaking manoeuvres by some.
Good / bad drivers are a constant. Some people are confident drivers and will safely overtake whilst some aren't so confident and will be less inclined to overtake. All types of drivers can cause crashes. You can be the best driver in the world but if some nutter pulls out in front of you, your'e still brown bread.
It's a state of mind, 'Drive prettily' as my old man always says.