Ayrton Senna's death in 1994 came as a shock because fatalities had been dropping — from 14 per decade in the 50s–70s to just 2 in the entire 1990s before that weekend. His funeral drew 3 million people. The sport's response: systematically slowing cars down, redesigning crash structures, and eventually mandating the halo device in 2018. F1 has had zero fatalities since 2014.