Lol Baz.
Other notorious sun locations - east bound A8 at the shawhead flyover. Fair enough there's a build up of traffic there generally, but on a sunny morning at the right time of year it's stoppedsville.
West bound M8 about 1.5 miles short of the Livingston junction late afternoon/early evening during the summer especially. The amount of times I've driven home from Edinburgh and been stopped there for NO reason other than a bit of ruddy sun.
WHY I OUGHTTA!