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  2. Overhead wire marker - Wikipedia

    en.wikipedia.org/wiki/Overhead_wire_marker

    Markers are often installed on overhead lines near airfields, or at river crossings where there is a possibility of float-equipped aircraft using the river. Some markers contain conductor marking lights or strobe lights to improve visibility at night or in fog. An overhead line obstruction warning marker near an airstrip.

  3. Utility location - Wikipedia

    en.wikipedia.org/wiki/Utility_location

    Utility location markers for a fire hydrant, a drinking water line and a natural gas line in Germany. In Germany, the colors used for temporary marking of underground utilities are not standardized like in other countries. However, permanent marker signs are used for utilities like hydrants, drinking water lines and natural gas lines.

  4. United States Department of Veterans Affairs emblems for ...

    en.wikipedia.org/wiki/United_States_Department...

    The following emblems and emblem numbers are publicized as available for government headstones and markers as of January 2025. [9] A process is in place to consider approving additional religious or belief system emblems requested by the families of individuals eligible for these headstones and markers.

  5. North American railroad signals - Wikipedia

    en.wikipedia.org/wiki/North_American_railroad...

    The main head is surrounded by up to 6 markers at the 12:00, 2:30, 4:30, 6:00, 8:30 and 10:30 o'clock positions. The function of the main head was block occupancy information with green representing two or more clear blocks, yellow one clear block, and red/lunar white representing a restricting indication, meaning the engineman was permitted to ...

  6. IEC 60446 - Wikipedia

    en.wikipedia.org/wiki/IEC_60446

    The international standard IEC 60446 Basic and safety principles for man-machine interface, marking and identification - Identification of equipment terminals, conductor terminations and conductors was a standard published by the International Electrotechnical Commission (IEC) that defined basic safety principles for identifying electrical conductors by colours or numerals, for example in ...

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