Live data from Hacker News

The Japanese traffic light blues: Stop on red, go on what?

japantimes.co.jp

31–40 of 72 posts

Re: The Japanese traffic light blues: Stop on red, go on what?

#31
post #20
post #15

Earlier quoted context omitted.

That's just fair - pedestrians aren't detected either

Pedestrians have a button to press to let the signal know they exist. Until we invent car-hands, that seems equivalent enough.

Not strictly true, a number of different traffic systems detect cars using detection methods such as cameras and radar/microwave.

Re: The Japanese traffic light blues: Stop on red, go on what?

#32

The same character is used in Chinese where it also refers to bluish-green, tending closer to green than blue: https://en.wiktionary.org/wiki/%E9%9D%92 There is also a character for a much deeper blue: https://en.wiktionary.org/wiki/%E8%97%8D

In Japanese, the blue sky is 青い空 (aoi sora). No green in it.

There's been a shift in Chinese with the character tending to mean blue in classical Chinese and green in modern Chinese, though some expressions retain the 'blue' meaning.

Japanese tends to use Chinese characters based on classical meaning.

Re: The Japanese traffic light blues: Stop on red, go on what?

#33
post #4

If you're driving in Japan, you're likely to be eaten by a grue light. That said, we actually mix some blue into modern green lights, so that colorblind people can distinguish the two colors. In official CalTrans terminology, the yellow lights are called "amber lights" -- so we have our own weirdness in the U.S.

That's because they're a mix of yellow and orange. They're called amber across Europe too, officially anyway. :)

Red, amber, green in the UK. Always amber and never yellow.

Re: The Japanese traffic light blues: Stop on red, go on what?

#34
It also happens in Korean. The green light is 파란불, literally "blue light". (Thankfully, traffic lights are actually green around here.) In modern usage, 파란 means "blue" most of the time, but its variant 푸른 continues to mean "grue". The sky is grue, and so is the pasture.

I don't think Korean even has a native word for "green". The most common word for "green" in modern usage is 녹색, which comes from the Chinese characters 綠色 and feels more like a technical term than a native Korean word when placed in a sentence.

Re: The Japanese traffic light blues: Stop on red, go on what?

#35
If they use anything like the hue that's used in the UK, it's been pushed a long way towards blue (IIRC the intention was to better accommodate people with red/green color-blindness).

You only really see it as explicitly “green” because years of training yourself to see it as green because that's what books depicted it as & that's what everyone called it.

Re: The Japanese traffic light blues: Stop on red, go on what?

#37
post #20
post #15

Earlier quoted context omitted.

That's just fair - pedestrians aren't detected either

Pedestrians have a button to press to let the signal know they exist. Until we invent car-hands, that seems equivalent enough.

In Japan there is sometimes a button for cyclists/motorcycles to push to get the lughts to change. I assumed this was because there is a sensor in the road to detect cars, but now I'm not so sure.

Re: The Japanese traffic light blues: Stop on red, go on what?

#38
post #4

If you're driving in Japan, you're likely to be eaten by a grue light. That said, we actually mix some blue into modern green lights, so that colorblind people can distinguish the two colors. In official CalTrans terminology, the yellow lights are called "amber lights" -- so we have our own weirdness in the U.S.

That's because they're a mix of yellow and orange. They're called amber across Europe too, officially anyway. :)

Not where I'm from, it's simply yellow.

Re: The Japanese traffic light blues: Stop on red, go on what?

#39

I've lived here in Japan for the past 18 years and I still tend to call them "midori", much to my wife and children's amusement. But, the hue of the lights are actually somewhere between the typical USA green lights and a blue. My wife (and kids) swear that it actually is a BLUE-hue light whereas I still see Green. SAME issue with the sun. I say it's yellow, they say it's red, and it's not a kanji issue... $0.02.

The sun is white.

Re: The Japanese traffic light blues: Stop on red, go on what?

#40

Earlier quoted context omitted.

I read somewhere (and a Google search brings up many articles that supports this) that among societies and languages that makes fewer distinctions between colors than the global educated society, blue and green are among the most frequent to remain undistinguished.

My dad also doesn't really distinguish between blue and green. It's mostly green to him. And he grew up in Italy...

He might just be slightly colorblind. Partial colorblindness is quite common.
Post reply on HN