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  2. Restrictions on cell phone use while driving in the United ...

    en.wikipedia.org/wiki/Restrictions_on_cell_phone...

    totally prohibited. Use of phone to talk is allowed, but text or email by the driver while vehicle is operational on state roads is prohibited. An exception exists for using GPS, dialing a number to make a call, or reporting an emergency. As of January 1, 2021, all handheld use of a phone will be prohibited.

  3. Variations in traffic light operation - Wikipedia

    en.wikipedia.org/wiki/Variations_in_traffic...

    A flashing red ball signal on a "protected" left turn traffic signal indicates that left turning traffic may, after a full stop, complete their turn if and only if there is a long enough break in oncoming traffic. The flashing red usually occurs when the oncoming traffic has a green signal.

  4. Blue box - Wikipedia

    en.wikipedia.org/wiki/Blue_box

    Blue box designed and built by Steve Wozniak and sold by Steve Jobs before they founded Apple. Displayed at the Powerhouse Museum, from the collection of the Computer History Museum [ 1] A blue box is an electronic device that produces tones used to generate the in-band signaling tones formerly used within the North American long-distance ...

  5. 112 (emergency telephone number) - Wikipedia

    en.wikipedia.org/wiki/112_(emergency_telephone...

    112 is a common emergency telephone number that can be dialed free of charge from most mobile telephones and, in some countries, fixed telephones in order to reach emergency services (ambulance, fire and rescue, police). 112 is a part of the GSM standard and all GSM-compatible telephone handsets are able to dial 112 even when locked or, in some ...

  6. International Code of Signals - Wikipedia

    en.wikipedia.org/wiki/International_Code_of_Signals

    The International Code of Signals ( INTERCO) is an international system of signals and codes for use by vessels to communicate important messages regarding safety of navigation and related matters. Signals can be sent by flaghoist, signal lamp ("blinker"), flag semaphore, radiotelegraphy, and radiotelephony. The International Code is the most ...

  7. Martin Cooper (inventor) - Wikipedia

    en.wikipedia.org/wiki/Martin_Cooper_(inventor)

    Martin Cooper (born December 26, 1928) is an American engineer. He is a pioneer in the wireless communications industry, especially in radio spectrum management, with eleven patents in the field. [ 2][ 3] On April 3, 1973, he placed the first public call from a handheld portable cell phone while working at Motorola, from a Manhattan sidewalk to ...

  8. AOL Mail

    mail.aol.com

    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

  9. Red box (phreaking) - Wikipedia

    en.wikipedia.org/wiki/Red_box_(phreaking)

    Red box (phreaking) A red box is a phreaking device that generates tones to simulate inserting coins in pay phones, thus fooling the system into completing free calls. In the United States, a nickel is represented by one tone, a dime by two, and a quarter by a set of five. Any device capable of playing back recorded sounds can potentially be ...