alt Hacker News> Ughm, is there any study that shows that guardrails and lights on bridges reduce fatalities?
> Akshually, are there any studies showing that cars riding 30 km/h kill less people than cars that ride 80 km/h?
> Ughm, is there any study that shows that guardrails and lights on bridges reduce fatalities?
> Akshually, are there any studies showing that cars riding 30 km/h kill less people than cars that ride 80 km/h?
I think there are both of those.