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America's Drivers Agree: LED Headlights Are Just Too Bright

wsj.com

11–20 of 98 posts

Re: America's Drivers Agree: LED Headlights Are Just Too Bright

#11
post #10

In addition to cars, I'm a cyclist and have noticed that LED cycle lights, both front and back, can also be far too bright sometimes. Blinding in fact. A few years ago, I was behind a bike which had such a high powered rear (red) LED light that I had to drop back to get away from it. It reminded me of the sort of powerful red light an airport might have. For bikes, it sometimes felt like an "arms race" in brightness.

This is sometimes the only way to make sure the drivers notice you.

Re: America's Drivers Agree: LED Headlights Are Just Too Bright

#13

Matrix headlights that automatically notch out oncoming cars have existed for years - but are banned in the USA.

> but are banned in the USA.

No, they've been allowed for 2 years now, pursuant to a law passed November 2021.

https://www.nhtsa.gov/press-releases/nhtsa-allow-adaptive-dr...

Re: America's Drivers Agree: LED Headlights Are Just Too Bright

#15
IMHO it's not the brightness, it's the contrast --- a diffuse field of light at the same brightness wouldn't be quite as uncomfortable as the sharp contrast between light and dark they create, and this goes for the one whose car has the headlights and the one being shone at. In my experience, newer brighter lights also means a sharper cutoff so there's a very bright area immediately in front of the vehicle followed by a very dark and invisible one, while the old incandescent style headlights tended to be dimmer overall and fade out gradually, so it seemed like visibility was actually better despite the lower brightness.

I wonder if ECE vs SAE patterns also have something to do with it: https://en.wikipedia.org/wiki/Headlamp#Construction,_perform...

Re: America's Drivers Agree: LED Headlights Are Just Too Bright

#16
post #12

Matrix headlights that automatically notch out oncoming cars have existed for years - but are banned in the USA.

It's not only oncoming drivers that can be blinded.

On my car it works for bikes and people too.

Re: America's Drivers Agree: LED Headlights Are Just Too Bright

#18
post #10

In addition to cars, I'm a cyclist and have noticed that LED cycle lights, both front and back, can also be far too bright sometimes. Blinding in fact. A few years ago, I was behind a bike which had such a high powered rear (red) LED light that I had to drop back to get away from it. It reminded me of the sort of powerful red light an airport might have. For bikes, it sometimes felt like an "arms race" in brightness.

On top of that, strobing.

I still don't understand the point of having strobe lights on a bicycle. What is that all about?

Re: America's Drivers Agree: LED Headlights Are Just Too Bright

#19

Matrix headlights that automatically notch out oncoming cars have existed for years - but are banned in the USA.

"banned" is not quite the right explanation. More "deemed not good enough". Source: https://www.cnn.com/2024/02/15/cars/headlights-tech-adaptabl...

Re: America's Drivers Agree: LED Headlights Are Just Too Bright

#20

I think UK drivers also agree. It’s like lots of people are driving around with their high beams on. They aren’t because if they were you’d wouldn’t be able to look at them at all. They are 20% too bright and all too cold.

It is bad here (uk) but in America it is wild - not only do they use far brighter bulbs in the usa, but the rules on how they can be angled aren't as strict and in some states are not enforced at all.

It can be unpleasant here, but I don't know how there aren't more accidents in the US

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