Unfortunately I believe it's nearly impossible to police poor attitudes. I think the only way to positively reduce the number of road accidents etc. would be to change the prevailing attitudes which are a blight of inflated self-importance.
Majority of drivers seem unconcerned with anything other than themselves. Combine that with an unparalleled sense of impatience and lack of consideration ...

It's as if road rage, intolerance and egotism have been passed down from ignorant father to ignorant son.