Thought experiment. Imagine you were told that if you keep using your car, within the next couple of years you would have a high probability (lets be super generous and say 70% ) of being involved in a 'traffic incident'. However, if you were, there would be an 80% chance that such an incident would be so insignificant that you would not even notice. For example, your tire might hit the curb lightly, or the car behind you might bump into yours softly and without damage.
Suppose that if you did have such an incident and it was noticeable (20% of incidents), there would be a 2% chance that you or anyone involved (like family members riding with you) would die. That is, even if you crashed and there would be damage to the car needing repair, 98% of the times all people involved would survive. According to my calculations, that means that overall, if you kept using your car, there would be a 0.0028% probability that someone would die within the next couple of years - either you, a family member, or a stranger involved in the incident. That means, 99.9972% chance that no one will die.
Of course, considering the overall population, that means that we can expect that 0.0028% would indeed die in a traffic incident within the next couple of years, whether you are personally involved in any or not. Suppose that you live in a city of a million people, then that means that 28 people will die in a traffic incident within the next couple of years.
Now here's the question. Knowing these figures, would you quit using your car or would you simply drive more carefully? Should the government ban cars altogether or should it improve laws and regulations to make car driving safer?
Because most of you are quite happy 'quitting your cars', and most governments are quite happy 'banning cars' nowadays."