I remember reading the study but I can only find broken references to it. This is from an .edu domain and although the citation to the study itself is broken -

I remember reading the study but I can only find broken references to it. This is from an .edu domain and although the citation to the study itself is broken - I hope it referencing the study counts for at least something. From memory, the TL;DR of the study was "speed differentials cause accidents, not speeding" along with "speed differentials cause more likely to be fatal accidents". A car going 75 MPH rear ending a car going 70 MPH is going to do less damage and potentially be less fatal than a car going 75 MPH rear ending a car going 55 MPH. I'll see if I can find the actual study. [0] https://sites.psu.edu/siowfa15/2015/09/18/is-driving-faster-safer/ https://sites.psu.edu/siowfa15/2015/09/18/is-driving-faster-...