Am 04.06.2019 um 16:32 schrieb Radey Shouman:
writes:

On 6/3/2019 1:23 PM, Radey Shouman wrote:

The trend in all motor vehicle fatalities over the past 20 years or so
is down, perhaps largely due to better emergency treatment.
More likely due to the presences of a large number of airbags in new
vehicles. Prior to that there were seat belts, shoulder belts,
collapsible steering columns, safety glass, padded dashboards, and
safety cages.

Maybe, although it would be good to have*some* evidence that this is
so.

There is one very simple way of separating the effect of "passive safety
measures" (seat belts, air bags etc) from other fatality avoidance
measures (speed limits, better emergency treatments etc).

If you compare long-term fatality figures for car drivers with fatality
figures for motor bikes, pedestrians and bicycles, anything that affects
all of them in the same way is due to speed limits, better emergency
treatments, etc.

Everything that on affects car inhabitants but does not affect others is
due to passive safety measures like seat belts, air bags, better brakes.