Still in the process of trying to get its trick LED Matrix Beam headlights legalized in the US, Audi is now trying to get its front and rear sequential LED turn signals approved by the National Highway Traffic Safety Administration. Just like its auto-dimming headlights, the sequentially illuminating turn signals don't meet NHTSA's Federal Motor Vehicle Safety Standard 108.
The National Highway Traffic Safety Administration has updated the motorcycle helmet law in an attempt to stop people from wearing improperly certified helmets and novelty helmets. The law doesn't change the construction of helmets directly, but changes the way they're labeled, to make it more difficult to mimic DOT compliance certifications.
Did you know that there was a World Forum for Harmonization of Vehicle Regulations? While it might seem to be a good idea to merge all the regulations governing automakers all over the world into one global standard, there's obviously a long way to go towards realizing that goal. In any case, with the recent proliferation of hybrids and the expected emergence of electric vehicles, new standards for safety are required.