This study didn’t nearly enough to disambiguate for widespread phone use while driving, which IMO is the biggest factor.
Self driving AI is the answer.
They have phones in Europe and their numbers are going down.
Would've been trivial to just run the same calculations on 1990s numbers when SUVs first became popular but long before smartphones.
I think it speaks volumes that they didn't.
It's not the biggest factor. Phone use tends to increase accidents but not to change the severity of the accidents much. Tall more vertical fronts change the severity of accidents, which changes the ratio between fatal and non-fatal accidents. The data shows that since ~2010 the ratio has changed significantly towards more fatal.