I got off a bus many, many years ago and a lady with a pram got off behind me and as I was walking away with the bus and the road behind me I heard an almighty tyre screech, and the lady had decided to cross in front of the bus she just got off, into the path of a car that was passing the bus, on a 30mph (but not very wide) road, I turned to see the car stop JUST in time with inches to spare as her pram was directly in front of the car, she'd just frozen where she was, no attempt to pull back out of the way. Things could have been so different. That road is now a 20mph road with speedbumps.