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It's a useful metric because, when comparing auto and plane safety, consumers are usually deciding between taking a plane and a car for the same distance. We co
by azernik 8y ago
It's a useful metric because, when comparing auto and plane safety, consumers are usually deciding between taking a plane and a car for the same distance. We could give them risk as a function of distance by taking the increased takeoff/landing risk into account, but generally people only compare the two for fairly long trips.
- ergocoder 8y agoFor the context of driving long distance, that makes sense.
- jrib 8y agoDo the car incident statistics only take into account long distance trips?
- azernik 8y agoFor cars they count all passenger-miles equally. Car accidents are much more strongly correlated with distance than aircraft accidents, but I don't know the actual risk factors - these are all heuristics for much more detailed models that I'm sure some academic is building.
- ergocoder 8y agoWhat is eye-opening here is that: Aviation industry insurers base their calculations on the deaths per journey statistic while the aviation industry itself generally uses the deaths per kilometre statistic in press releases from https://en.wikipedia.org/wiki/Aviation_safety#Transport_comparisons https://en.wikipedia.org/wiki/Aviation_safety#Transport_comp... So, insurers don't wanna use this death per distance.