"Our estimate is that about 200 to 400 pedestrians a year would not have died if vehicles had remained approximately the same size over the past quarter-century"

They're making loud noise about nothing. 200-400 people in a country of 200+ million is nothing.

Yes... big trucks and SUVs might have something to do with it. Could also be that people are not paying attention more because of their phones. Could also be that the people in these vehicles suck at driving them.

The data doesn't account for particular instances, it's just a guess at what is the cause.