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In order to show compliance to FMVSS 108, the lens of each original equipment and replacement headlamp, daytime running lamp (DRL) and certain conspicuity reflectors must be marked with the symbol "DOT". [1]: S6.5, S8.2.1.3, Table III This symbol may also be applied to compliant signal lighting devices, but is not mandatory.
Headlight flashing might have come into more common use as a means of attempting driver-to-driver communication by the mid-1970s, [3] when cars began to come with headlight beam selectors located on the steering column—typically activated by pulling the turn signal stalk—rather than the previous foot-operated pushbutton switches.
The charts are published "in accordance with Interagency Air Cartographic Committee specifications and agreements, approved by the Department of Defense and the Federal Aviation Administration". The legend of an aeronautical chart lists many of the symbols, colors and codes used to convey information to the map reader.
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]).
Visual Glide Slope Indicator or Visual Glideslope Indicator (VGSI) is a ground device that uses lights to assist a pilot in landing an airplane at an airport.The lights define a vertical approach path during the final approach to a runway and can help the pilot determine if the airplane is too high or too low for an optimum landing.
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One of the first civilian examples of headlight covers was produced in NSW, Australia by the Read family dairy. [169] The use of headlight covers and the modification of light produced by vehicles continued in both the military's development of special blackout head and tail light technologies and in the civilian sector as well. In addition to ...
Three little bursts of steam under the iron symbol: It’s safe to steam the garment. An X over an iron with three bursts of steam: Avoid steaming. Laundry symbols for dry cleaning clothes