how could one forget them, I have been driving up the A9 salmon fishing for 30 odd years and five years ago i couldn't believe what a huge expense and speed disaster this created for me.
I always used to see how fast I could get to dunkeld from lancs 3hrs 15 I think was my best in a loaded van.
They don't cover the dual carriageway bits, only the single carriageway sections. That helps. For me the journey to Perth is quite easy and straightforward; it gets harder after that!