> TRL's data suggests that LED and whiter headlamps may be linked to glare and that drivers might find their whiteness harder to cope with. As a long-time walk

> TRL's data suggests that LED and whiter headlamps may be linked to glare and that drivers might find their whiteness harder to cope with. As a long-time walker in the US, anecdotally, I've noticed some especially blinding car headlights, and they seem to be among the whiter ones. "Hey, thanks for ruining my night vision and my sleep cycle." But I usually can't tell whether the cause of the problem is the the aiming, brightness, or temperature. I thought headlights were carefully regulated. (There's something about LED lights that brings out oblivious or indifferent behavior. Maybe involving efficiency improvements, and people not reassessing requirements (e.g., when you couldn't get a too-bright light, or it would be too expensive to operate, you didn't have to think about other not-too-bright requirements). In recent years, we got municipalities installing miserable bright white street lamps, prompting complaints from walkers and people who don't have blackout curtains anywhere that shines in at night. And the last couple years, some individual residential properties in my very dense neighborhood are installing crazy-bright white LED floodlights outdoors, shining at sidewalks and adjacent property windows, brighter than even the new street lamps. I'm starting to see walkers at night going out into the street (which isn't very safe), just to avoid the blast. The first too-bright property lights to appear on a block's street are very easy to spot, because they're obviously the brightest thing there.)