Road design, safety and Vision Zero

[SammyOES]

Accidents and traffic deaths are investigated. All the time. And studies are done (you linked one!). And improvements to cars and roads and regulations are constantly made. But it’s entirely obvious that the model for bridge investigations or plane crashes is prohibitively expensive for individual car accidents.

It’s the same thing with healthcare. We don’t investigate every death or mistake made in healthcare. That would be an insane waste of resources with very fast diminishing returns.

Tainted water isn’t always prevented or investigated either. It’s not just about limits of contaminants but about things like how often water systems need to be inspected. Rules around private wells. When boil water advisories are needed. Etc.

Aircraft accidents are still the same. It’s much easier to investigate individual commercial plane crashes because there are way fewer of them than car crashes and the cost per crash is significantly higher. But the recommendations that come out are just more trade offs. Never does anyone think their report is the one that will stop people from dying ever again.

And you still seem to think that there’s way more certainty in these things than there actually is. If you really believe that a bridge collapse results in that type of failure never happening again, I’ve got a bridge to sell you.