Somewhat off topic, but I feel the need to point out that traffic doesn't really work all that well when you consider the space of possible transportation systems we could realistically implement.

First Google result says that "by car insurance industry estimates, you will file a claim for a collision about once every 17.9 years".

Poisoning, Accidental Falls, and Car Accidents each make up about a quarter of all accidental deaths. Breaking down by age, driving is also the leading cause of death for ages 18-24 (and the risk of driving does fall a bit with increasing age - but not by that much. Mostly its severity is just eclipsed by other, health related things)

So... falls are presumably related to aging , but a good way to prevent large number of deaths among youth would be to create small-but-accident-preventing barriers to self-administration of potentially lethal substances, and replacing driving with something else.

I suspect that we'd all be much more wary of driving and painkillers (particularly for young people), if we rationally evaluated risk.