I've been documenting 'Construction + Safety Graphics in Japan for twenty years. It's a pretty cool art form, especially if you are into character design. Many of the most common signage are designed by 'Tezuka Production' which is the legacy / family business design studion of Astro Boy creator 'Osamu Tezuka' it seems to be a public good situation/ license.

Anyway, please check out my tumblr of 'Japanese COnstruction Graphics' if you find this subject interesting.

https://www.tumblr.com/blog/japanconstructiongraphics

3D / AR/ Full Stack Vibe Coder
https://www.mrbriandesign.com

Astro Boy maniacs, hit me up I just might know the whereabouts of a couple of these.