All the time around here! I posted a few months back about how I'd been coming up the road and a bus on the opposite side wanted to turn left. To do so the car that was on the road that the bus had to go down, needed to come out, so the bus could swing around onto my side of the road and get around the bend. I stopped as I'd seen the bus driver flash the car, I flashed to give the ok, the car obviously looked both ways to see it was ok, before pulling out, literally took 5 seconds. Beeeeeep, from the BMW behind me. The thing is, the traffic in front of me was stationary in a que, so even if I'd moved forward that extra 6 car lengths it wouldn't have made any difference! I admit I was annoyed and when this car ended up side by side to me several miles later, I really wanted to give her the finger.
Anyway I posted on here, I admit I was wrong about the finger (even though I didn't actually do it!!) but the amount of people that said I shouldn't have allowed them out.
The road I am referring too, during school run time, is bumper to bumper for about three miles. If drivers never allowed out the cars on the side roads, they wouldn't get out for over an hour.
There is one high school I go past and the children just walk or run straight in front of you. I've done two emergency stops in the last few weeks.
Yet a few miles up the road, my son's school, it doesn't matter if it's one child or sixteen children, they wait until it's clear, if cars stop to allow them to cross, every single one without fail will raise their hands to say thank you. They could show some adults who blindly walk across the road some manners.