I think there may be a hint of something to do with you Bazile. Once someone has overtaken me and is clear, I don’t take any notice of what they are doing....unless they brake hard, they can’t hit me so I focus on more likely potential hazards. I do the wait to pull out thing if the car is close but you can also tell by their slowing down and moving over in the road rather than waiting till they actually do turn. Again, i take no notice of horns behind me when I an stationary.