TIL Japan railway platforms saw a 84 percent decrease in suicides at stations after they installed blue lights.

https://nextcity.org/urbanist-news/how-blue-lights-on-train-platforms-combat-tokyos-suicide-epidemic
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1gpinj4/til_japan_railway_platforms_saw_a_84_percent/