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  2. Xbox 360 technical problems - Wikipedia

    en.wikipedia.org/wiki/Xbox_360_technical_problems

    The Xbox 360 video game console is subject to a number of technical problems and failures that can render it unusable. However, many of the issues can be identified by a series of glowing red lights flashing on the face of the console; the three flashing red lights nicknamed the " Red Ring of Death " or the " RRoD " [1] [2] being the most ...

  3. Emergency vehicle lighting - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_lighting

    Ambulances usually have large integrated roof corner flash lights, 3 blue ones and 1 red at front right position, and 3-5 or more smaller red/blue flash lights on mirrors, hood, grill, side and back, mounted and used in a zig-zag pattern. Separately-mounted external lightbars on ambulances are rare, used just on doctor's cars and older vans.

  4. Variations in traffic light operation - Wikipedia

    en.wikipedia.org/wiki/Variations_in_traffic...

    These flashing red arrows were later replaced with flashing yellow arrows. Dover, Delaware Used a 4-lamp Signal, Forming a T, It has a Flashing Red arrow on the left and Steady Red arrow on the right and yellow and green arrow on the bottom; during the permissive turn, the flashing red arrow is displayed.

  5. Check engine light - Wikipedia

    en.wikipedia.org/wiki/Check_engine_light

    A check engine light or malfunction indicator lamp ( MIL ), is a tell-tale that a computerized engine-management system used to indicate a malfunction or problem with the vehicle ranging from minor (such as a loose gas cap) to serious (worn spark plugs, engine problems or a faulty oil valve, etc.). Found on the instrument panel of most ...

  6. Green flash - Wikipedia

    en.wikipedia.org/wiki/Green_flash

    Green beam of light either shooting up or seen immediately after sundown; usually a few degrees long, lasting several seconds. Hazy air and a bright green flash acting as a light source. Sea level. The majority of flashes observed are inferior-mirage or mock-mirage effects, with the others constituting only 1% of reports.

  7. Signal lamp - Wikipedia

    en.wikipedia.org/wiki/Signal_lamp

    Signal lamp. A signal lamp (sometimes called an Aldis lamp or a Morse lamp[ 1]) is a visual signaling device for optical communication by flashes of a lamp, typically using Morse code. The idea of flashing dots and dashes from a lantern was first put into practice by Captain Philip Howard Colomb, of the Royal Navy, in 1867.

  8. Arc flash - Wikipedia

    en.wikipedia.org/wiki/Arc_flash

    An arc flash is the light and heat produced as part of an arc fault (sometimes referred to as an electrical flashover ), a type of electrical explosion or discharge that results from a connection through air to ground or another voltage phase in an electrical system. Arc flash is distinctly different from the arc blast, which is the supersonic ...

  9. Can I run a red light if it won’t change? Flash my ... - AOL

    www.aol.com/run-red-light-won-t-183208674.html

    Simply put: You cannot run a red light if it’s taking too long to turn green. If you do, you risk being cited by law enforcement, according to California Vehicle Code 21453.