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  2. Rules for traffic lights - Wikipedia

    en.wikipedia.org/wiki/Rules_for_traffic_lights

    In much of the United States failed traffic signals must be treated as all-way stop intersections. In the US, traffic lights inactive at night time emit an amber-coloured flashing signal in directions owing priority while the intersecting street emits a flashing red light, requiring drivers to stop before proceeding. [citation needed]

  3. Nyquist frequency - Wikipedia

    en.wikipedia.org/wiki/Nyquist_frequency

    Early uses of the term Nyquist frequency, such as those cited above, are all consistent with the definition presented in this article.Some later publications, including some respectable textbooks, call twice the signal bandwidth the Nyquist frequency; [6] [7] this is a distinctly minority usage, and the frequency at twice the signal bandwidth is otherwise commonly referred to as the Nyquist rate.

  4. Nyquist–Shannon sampling theorem - Wikipedia

    en.wikipedia.org/wiki/Nyquist–Shannon_sampling...

    The Nyquist–Shannon sampling theorem is an essential principle for digital signal processing linking the frequency range of a signal and the sample rate required to avoid a type of distortion called aliasing. The theorem states that the sample rate must be at least twice the bandwidth of the signal to avoid aliasing.

  5. Should you signal to make a right or left turn when trying to ...

    www.aol.com/signal-left-turn-trying-enter...

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  6. International Code of Signals - Wikipedia

    en.wikipedia.org/wiki/International_Code_of_Signals

    The Medical Signal Code [13] (incorporated in the International Code of Signals since 1930) is a means of providing assistance when medical personnel are not present. Plain language is generally preferred in such cases (presumably via radiotelephone), but the various codes provide a succinct method of communicating to a doctor the nature of the ...

  7. Turn on red - Wikipedia

    en.wikipedia.org/wiki/Turn_on_red

    In Latvia, you are allowed to turn right/left on red when an additional section is present and lit on a traffic light. If the main signal is red and an additional signal is lit, you may pass to the direction of the arrow in the traffic light but you must give way to all traffic (including pedestrians).

  8. Rules of the Road: Here’s how to handle tailgaters when you ...

    www.aol.com/news/rules-road-handle-tailgaters...

    Beyond your turn signal, how friendly do you want to get? If you can see the driver through your rear-view mirror, I suppose you could also offer a wave, followed by a hand shrug (when you hold up ...

  9. Traffic light - Wikipedia

    en.wikipedia.org/wiki/Traffic_light

    Traffic must stop before entering the intersection, but may then treat the signal by the same rules as a STOP sign. Red arrow Traffic shall not make the movement displayed by the arrow Traffic must stop before entering the intersection, but may then treat the signal by the same rules as a stop sign to make the movement displayed by the arrow.