"The existence of a credible threat of a fine for breaking the law is enough to dissuade nearly everyone from breaking it." Yes, but they need to know that thr

"The existence of a credible threat of a fine for breaking the law is enough to dissuade nearly everyone from breaking it." Yes, but they need to know that threat exists. If they arent aware the bus takes video and sends it to the police, then they don't see the threat. If they don't know you have to stop on a multi-lane road without a median, then they don't see the threat. That's why measuring repeat offenders could be a better signal than an overall number in a relatively short time. As an aside, diplomats will gladly break laws with a $250 fine because they are largely immune. This is relevant as there are a fair amount in that region. So there are exceptions to your rule.