This paper might be a good starting point. It's mostly about vehicle-vehicle collisions and the higher risks from heavier vehicles, but they discuss pedestrian

This paper might be a good starting point. It's mostly about vehicle-vehicle collisions and the higher risks from heavier vehicles, but they discuss pedestrian fatalities a bit. https://www.nber.org/system/files/working_papers/w17170/w17170.pdf https://www.nber.org/system/files/working_papers/w17170/w171...