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Stack light in automated production for in-line quality inspection. Stack lights (also known as signal tower lights, indicator lights, andon lights, warning lights, industrial signal lights, or tower lights) are commonly used on equipment in industrial manufacturing and process control environments to provide visual and audible indicators of a machine's status to machine operators, technicians ...
They were common on vehicles until the introduction of the flashing amber, red or white indicators at or near the corners of the vehicle (and often along the sides as well), now referred to as "turn-signals". They have been increasingly rare since the 1950s, as ever-stricter legislation has prescribed the need for the modern type of flashing ...
A check engine light or malfunction indicator lamp (MIL), is a tell-tale that a computerized engine-management system uses 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.).
Direction indicator lights [23] or turn signals, [11] informally known as directional signals, directionals, blinkers, or indicators, are blinking lights mounted near the left and right front and rear corners of a vehicle, and sometimes on the sides or on the side mirrors of a vehicle (where they are called repeaters [50]).
A group of tell-tales showing lights for "brake fluid", "stop lamp" and "check engine" Graphical tell-talesA tell-tale, sometimes called an idiot light [1] or warning light, is an indicator of malfunction or operation of a system, indicated by a binary (on/off) illuminated light, symbol or text legend.
In Florida, headlight flashing is protected free speech pursuant to the First Amendment. [39] Additionally, on 1 January 2013, §316.2397(7), Fla. Stat. was amended to legalize headlight flashing. [40] [41] In 2005 and 2011, judges in County Court held that flashing a vehicle's headlights is not a violation of §316.239(7), Fla. Stat. [42] [43]
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A General Electric NE-34 glow lamp, manufactured circa 1930. Neon was discovered in 1898 by William Ramsay and Morris Travers.The characteristic, brilliant red color that is emitted by gaseous neon when excited electrically was noted immediately; Travers later wrote, "the blaze of crimson light from the tube told its own story and was a sight to dwell upon and never forget."