An adult pedestrian has less than a 20% chance of dying if struck by a car traveling at less than 50kmh but almost a 60% risk of dying if hit at 80 kmh.
Download: https://www.grsproadsafety.org/wp-content/uploads/2015/10/GSRRS2015_Summary_EN_final.pdf
Source: WHO: Global Status Report on Road Safety 2015