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  2. California Manual on Uniform Traffic Control Devices

    en.wikipedia.org/wiki/California_Manual_on...

    Each of the California sign specifications is assigned an alphanumeric designation and organized according to the same series found in the SHSM. The sign designation for a state-specific sign includes a "(CA)" after the sign number. The CA MUTCD also defines some state-specific series: [8] Series G: California Guide; Series SG: California ...

  3. Emergency vehicle lighting - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_lighting

    Flashing blue lights and two-tone horns may only be used by authorized vehicles in case of emergency and order all other vehicles to make way, since these vehicles have the absolute right of way. Blue lights alone may be used to secure the site of an accident (or a standing emergency vehicle).

  4. Automotive lighting - Wikipedia

    en.wikipedia.org/wiki/Automotive_lighting

    Map lights are aimed at specific passenger positions and allow for reading without glare distraction to the driver. Some vehicles have "approach lighting" or "puddle lights" (lights that illuminate the ground outside the doors) in the exterior mirrors or lower edges of the doors, as well as interior lighting activated via key fob.

  5. Are smoked or tinted headlights legal? - AOL

    www.aol.com/news/smoked-tinted-headlights-legal...

    Nov. 5—Question: I was wondering what the state guidelines are regarding smoked or tinted headlights. Are they legal? Answer: Minnesota law does not allow for this. It is illegal to equip or ...

  6. How bright can a car’s LED lights be before it becomes ...

    www.aol.com/news/bright-car-led-lights-becomes...

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  7. List of automotive light bulb types - Wikipedia

    en.wikipedia.org/wiki/List_of_automotive_light...

    In the United States, entry 49 CFR 564 in the Code of Federal Regulations requires manufacturers of headlight bulbs, officially known as "replaceable light sources", to furnish the National Highway Traffic Safety Administration (NHTSA) with product specifications at least 60 days prior to first use. [6]

  8. Headlights are blinding us. Here’s why it’s mostly an ...

    www.aol.com/headlights-blinding-us-why-mostly...

    In Europe and Asia, many cars offer adaptive driving beam headlights that can do this. ADB is a lighting technology that has been available for many years in other parts of the world including ...

  9. Headlamp - Wikipedia

    en.wikipedia.org/wiki/Headlamp

    U.S. standard 7-inch headlamp combining low and high beam with turn signal lights below on a 1949 Nash 600 Glass-covered 5¾" sealed beam headlamps on a 1965 Chrysler 300 Rectangular sealed-beam headlamps with turn signal light below on a 1979 AMC Concord. Headlight design in the U.S. changed very little from 1940 to 1983. [7] [16]