Christopher Kyba 🇨🇦🇪🇺<p>Is it your imagination, or are car <a href="https://fediscience.org/tags/headlights" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>headlights</span></a> getting brighter?</p><p><span class="h-card" translate="no"><a href="https://astrodon.social/@salvabara" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>salvabara</span></a></span> scoured the web and crunched the numbers to make this graph. It shows that car headlights on average have gotten quite a bit brighter in the last decade, and that the rate of increase is higher for low beams than for high beams.</p><p>Preprint here: <a href="https://zenodo.org/records/15565958" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">zenodo.org/records/15565958</span><span class="invisible"></span></a></p><p>Related news: some headlight manufacturers are intentionally selling "brighter than allowed" headlights by engineering dark spots where the sensors that check for glare are used: <a href="https://www.theringer.com/2024/12/03/tech/headlight-brightness-cars-accidents?lid=dpe6tiyd81ev" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">theringer.com/2024/12/03/tech/</span><span class="invisible">headlight-brightness-cars-accidents?lid=dpe6tiyd81ev</span></a></p><p>This is part and parcel with the vehicle size issue in the US, where the general principle seems to be "my car should be the biggest and the brightest". But while cars get bigger and brighter, deaths from collisions are rising - how shocking...</p><p><a href="https://fediscience.org/tags/LightPollution" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LightPollution</span></a> <a href="https://fediscience.org/tags/Safety" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Safety</span></a> <a href="https://fediscience.org/tags/RoadSafety" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RoadSafety</span></a></p>