One of the contributor to low fatalities-per-mile was congestion, my guess is that while miles driven per year increased every year average/median driving speed

One of the contributor to low fatalities-per-mile was congestion, my guess is that while miles driven per year increased every year average/median driving speed decreased due to traffic up to 2020 when congestion decreased for the first time. https://podcast.strongtowns.org/e/driving-went-down-fatalities-went-up-here-s-why/ https://podcast.strongtowns.org/e/driving-went-down-fataliti...