Ok-disaster2022 t1_j7mdka0 wrote on February 7, 2023 at 9:08 PM

Reply to comment by strangr_legnd_martyr in TIL the first Blue LED wasn't commercially available until 1989 and bright blue LEDs weren't available until 1993. by j-merc23

However there's an issue with emergency signage. Red is the color of danger, stop, while green is safe, go. Exit signs in areas of low literacy are green and green are becoming more common in the US to be more inclusive of people who can't read.

Marzgog t1_j7qj8dt wrote on February 8, 2023 at 6:25 PM

My country has among the highest rates of literacy in the world and our exit signs are green. I don’t think inclusivity has anything to do with exit signs going green, it’s just one of those universal standards in the making.