A nice article, but it's nothing new. Everything in there was taught to me in AD courses & tuition. One thing that was missed is a lot of drivers don't actually scan the road they're joining until they're about to turn into it. By starting to look for vehicles as you're approaching a junction is makes it much, much harder to miss movement. Obviously you can't do this at every junction, but if you get into the habit of looking pre-arrival then you become more aware that you're coming up to a junction with reduced vision.