What on earth does red+yellow mean? "It's about to be green"?

Yes, that's correct. It can help shorten the lag between turning green and people going as you can do your checks that the intersection is clear knowing it's about to change.

This is why modern green lights have a blueish tint to them. At least here in the US, older green lights were more of a pure green, and that meant for red-green colorblind people it was much harder to differentiate between red lights and green lights. But in this image you can see that the slight blue tint makes them pretty different.

Here I was thinking the position of the light itself was the fallback.

But then you got single blinking yellow vs single blinking red and I guess in those scenarios colorblind people just have to guess real good?

Yeah, plus approaching a light at night you need to be able to tell by color what it is signaling.

"this is why" ... Meaning... They designed it for dog drivers?!

Yes, red-green colorblind people are dogs.

(/s)

This pic quality tells me the meme is circa 1903? If I remember correctly, it was screenshotted around then and reuploaded in 1917.

I’ve only seen it in Europe, never in North America.

Just another screenshot vro!

is the fediverse instance you use charging you per pixel to post?

are you on fucking 28.8 baud?

DO THEY MAKE YOU SEND PACKETS BY PIGEON?

stop posting this microscopic bullshit

I found it like this elsewhere, alright? If you or anyone else has a higher quality version, please feel free to share it and I'll replace the OP with it.

At least in the U.S, The green light is on the bottom or the right of the light housing. Red is on the top or left.

Don't forget to donate to your instance!

can confirm

one nickel at a time!