This year, the speed limit in #Bordeaux dropped from 50 km/h to 30 (30 to 20 mph). Joins #Montpellier #Grenoble, #Nice, #Lille, #Nantes, 200 other cities in #France with 30 km/h limits.

This has already led to an astonishing 70% decrease in crash fatalities.

@straphanger First of all: I completely agree with that idea!! But is there a source available for that 70% decrease? 70% sure sounds incredible. But for the complete picture it is always nice to also know the absolute numbers. Because: the lower the absolute numbers are, the bigger the influence of single events, (bad) luck and random coincidences can be, without any causal connection to the thing we wanted to measure in the first place 🀷🏻 #statistics #causalinference