Generally, you can't stand on the outside of a corner. Where most of these photos were taken from, there was a slight bend in the road, so that I could get a good shot. So, things aren't quite as dangerous as they seem. But, the rally does travel past a lot of private property, so they can't stop everyone from sitting wherever they want to.
I remember a couple of years ago, one guy was standing where he shouldn't have been (on the road) and got hit. The general attitude of everyone, including the media was that it was his own fault, the idiot.
The standards do seem to vary from one country to another though.