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  2. Aircraft marshalling - Wikipedia

    en.wikipedia.org/wiki/Aircraft_marshalling

    A long exposure of a United States Navy Landing Signalman Enlisted (LSE) directing a SH-60F Sea Hawk to take off using marshalling wands. Despite efforts to standaridize aspects of aviation communication, such as terminology and language, hand signals used to guide aircraft on the ground still vary between various major organizations, such as the International Civil Aviation Organization [3 ...

  3. Stop sign - Wikipedia

    en.wikipedia.org/wiki/Stop_sign

    Stop sign placement can pose difficulties and hazards in applications where cross traffic is not controlled by a sign or light. Relatively long distance between the stop sign and the crossroad facilitates accurate perception of the speed of approaching cross traffic, but lengthens the time and distance required to enter and clear the junction.

  4. French railway signalling - Wikipedia

    en.wikipedia.org/wiki/French_railway_signalling

    Where trains run on the left, the hand-held stop signals (red flag, stop marker or lantern with red light) are presented on the left or at the center of the relevant track. If there is a platform by the track, they can be presented on the side of the platform.

  5. Aviation light signals - Wikipedia

    en.wikipedia.org/wiki/Aviation_light_signals

    Air traffic control signal light gun in use at base flight tower. In the case of a radio failure or aircraft not equipped with a radio, or in the case of a deaf pilot, air traffic control may use a signal lamp (called a "signal light gun" or "light gun" by the FAA [1] [2]) to direct the aircraft.

  6. Flag semaphore - Wikipedia

    en.wikipedia.org/wiki/Flag_semaphore

    A US Navy crewman signals the letter 'U' using flag semaphore during an underway replenishment exercise (2005). Flag semaphore (from the Ancient Greek σῆμα (sêma) 'sign' and - φέρω (-phero) '-bearer' [1]) is a semaphore system conveying information at a distance by means of visual signals with hand-held flags, rods, disks, paddles, or occasionally bare or gloved hands.

  7. Why doesn't the Hollywood sign light up at night? We have answers

    www.aol.com/news/why-isnt-hollywood-sign-lighted...

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