Poor bugger! Rip
Shows it can happen to the best of us,even with advanced training.
This type o thing seems to be on the increase & i cant see an easy answer,apart from doing 20mph past every junction with a waiting car which isnt the most practical,people are so busy & increasingly confident about their own driving that they dont feel the need to really stop & look & look again to be sure,its all sandwiches between the knees,phone in one hand,radio blasting.
For me just going out on the bike for fun, i can afford to lose a bit of time & my mistrust for car drivers seeing me has led to me doing just that & an agreeable nod to them to say thanks for seeing me i hope gets the message across how vulnerable i am.