The 2011 study that everyone cites:
https://www.nhtsa.gov/sites/nhtsa.gov/files/811507.pdf
Wasn't there a UK or EU one that came out with similar results.
Can't be arsed to Google, as it makes no difference.
@pdlouche started
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The 2011 study that everyone cites:
https://www.nhtsa.gov/sites/nhtsa.gov/files/811507.pdf