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Re:Why Japan Has Blue Traffic Lights Instead of Green by SECProto on Monday October 23, 2023 @03:36PM (#37990481)
> for a start, the first JP law on traffic lights in the 1930s used midori, not ao.

Have a source for that? This section[1] of the ja.wikipedia article could apparently use your revisions - both kanji are acceptable.

[1] https://ja.wikipedia.org/wiki/%E4%BA%A4%E9%80%9A%E4%BF%A1%E5...

Re:Why Japan Has Blue Traffic Lights Instead of Green by fenomas on Monday October 23, 2023 @06:34PM (#37992541)
That link doesn't mention the law I referenced, so I don't know what you're asking for.

If you want a source that the 1930 law used midori, see here, under「発祥期」:

https://ja.m.wikipedia.org/wiki/%E6%97%A5%E6%9C%AC%E3%81%AE%...

Re:Why Japan Has Blue Traffic Lights Instead of Green by SECProto on Monday October 23, 2023 @09:26PM (#37993898)
Are you referring to reference number 184? I'm looking for a primary source for your statement that midori was the colour standardized in law since the 1930s, because the section I linked about colours explicitly calls out ao and notes the difference in different jurisdictions.
Re:Why Japan Has Blue Traffic Lights Instead of Green by fenomas on Monday October 23, 2023 @10:46PM (#37994345)
> your statement that midori was the colour standardized in law since the 1930s

In 1930, not since the 1930s. The 1930 law used midori, but it was changed to ao in 1947 after that became the more popular usage. The page you linked was about the current law.