“A guy disappeared in my country. Everyone knew he died. Everyone knew who did it. But the guys were policemen. So the investigation was so ruined it became ridiculous.There are people on this planet who can interven in the investigations made against them, decide to block them and if you do something about it, no one will investigate when you will mysteriously vanish.”
It only helps to a degree. Takes only 1 idiot to speed through a red light and it's over.
I also don't tail gate; look both ways when crossing a one way street; check that there aren't any cars coming if I'm about to walk past a big rain puddle, etcetera etcetera.