BentMikey said:Here's an easy analogy: Take all the vehicles out of your example. Where is the danger now? Easy - your mate's pissed mum doesn't cause any danger in this example.
here's another analogy: take mate's pissed mum out of the equation. Where's the danger now? Correct, there isn't one. Therefore she is the one that causes the danger.
I know what BentMikey's trying to say - his attitude is that it shouldn't be taken for granted that cars are going to be there in the first place, they haven't always been there throughout history and therefore they shouldn't expect other road users to take it for granted that they're going to be there.
But unfortunately the world we live in today is one in which roads have been built and expanded simply to cope with the demand to drive cars on them, so you unfortunately do have to expect cars to be there.