2 HN users recommended this explainer2 months2020–2024score 2
Years with an HN recommendation, 2007–2026
HN points to it as the informative explanation of US turn signal quirks whenever signal design comes up.
Technology Connections explains why North American tail light rules, which allow red turn signals and flashing brake lights, make signals ambiguous. He argues for amber signals and cites studies showing a safety benefit.
“did a very informative (though a bit ranting) video on them in the US. Worth a watch and really interesting.” (HN, 2021)
For those who haven't been to the US, I was blown away that some cars use brake lights as the turn indicator - good video on the set up (and issues): [this video]
Explains US brake-light turn signals and their issues
Speaking of terrible turn signals, Technology Connections on YouTube did a very informative (though a bit ranting) video on them in the US. Worth a watch and really interesting. [this video]
Informative, slightly ranting video on US turn signals
> I seem to recall reading amber turn signals are required the EU but not US. Yes ( [this video] ). The US allows not only red turn signals, but implementing turn signals by flashing brake lights.
US allows red turn signals and flashing brake lights
> Then again, it also boggles my mind how car makers in the US continue to use flashing red lights as the turn signal instead of yellow lights. Technology Connections channel had a video about that a while back: [this video]
Technology Connections covered red US turn signals
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