this post was submitted on 24 Aug 2025
694 points (99.4% liked)
Microblog Memes
9119 readers
2932 users here now
A place to share screenshots of Microblog posts, whether from Mastodon, tumblr, ~~Twitter~~ X, KBin, Threads or elsewhere.
Created as an evolution of White People Twitter and other tweet-capture subreddits.
Rules:
- Please put at least one word relevant to the post in the post title.
- Be nice.
- No advertising, brand promotion or guerilla marketing.
- Posters are encouraged to link to the toot or tweet etc in the description of posts.
Related communities:
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
The car designers specifically dampen their headlight output in the exact spot where regulators measure their light.
But there's also the issue that they have way too much blue light. Blue light still damages eyes even though it's only UV adjacent and not UV.
I don't know about regulations, but you are right about the blue light. Most white LEDs have low CRI, and that's why things look weird with them.
The reason they use low CRI LEDs is probably because they are cheaper and produce more lumens per watt.
Blue light does not damage things just because it's "adjacent to UV". And low cri is good enough for driving, you need to see whether there's a pedestrian on the side of the road, not to create a nice photographic composition.
I meant they were right about being too blue. I don't think that it damages the eyes because it's blue, but I'm pretty sure a really bright light can damage your eyes.
LED headlights would be fine if they weren't infinitely bright and a shade of blue/cool white. Just make them a bit warmer and not so bright.
Yeah, what I'm saying is that there are rules about how much you are allowed to blind everyone else and car designers are specifically circumventing them.
It would also be nice if they were a more pleasant colour.
The reason why car designers do this is because it sells more cars. People feel safer in a huge SUV / "truck" when though they aren't. People also feel safer when they can light everything up even though they aren't.
Source? There's like 100 different testing agencies around the world...