Close calls don't get closer than this: A driver avoids a fairly minor accident, slows down and, suddenly, a fast cement truck appears out of nowhere trying to regain control. Miraculously, the skillful—and lucky!—truck driver manages to avoid a potential carnage.
Q: What kind of an idiot jams on their brakes on a two lane highway with no shoulder where one lane is already blocked by a car that had an accident?
A: The kind of idiot that pilots 99% of cars on the road.
People just don't think at all when they're behind the wheel.