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  2. Air traffic control - Wikipedia

    en.wikipedia.org/wiki/Air_traffic_control

    Air traffic control (ATC) is a service provided by ground-based air traffic controllers (people) who direct aircraft on the ground and through a given section of controlled airspace, and can provide advisory services to aircraft in non-controlled airspace. The primary purpose of ATC worldwide is to prevent collisions, organise and expedite the ...

  3. UK air traffic control chaos ‘to last for days’ after 1,200 ...

    www.aol.com/air-traffic-control-failure-sees...

    CAA addresses outage that triggered 1,500 flight cancellations. 11:00, Maanya Sachdeva. The interim chief executive of the Civil Aviation Authority has addressed the air traffic control fault that ...

  4. Next Generation Air Transportation System - Wikipedia

    en.wikipedia.org/wiki/Next_Generation_Air...

    The Next Generation Air Transportation System ( NextGen) is an ongoing United States Federal Aviation Administration (FAA) project to modernize the National Airspace System (NAS). The FAA began work on NextGen improvements in 2007 and plans to finish the final implementation segment by 2030.

  5. Automatic train control - Wikipedia

    en.wikipedia.org/wiki/Automatic_train_control

    Automatic train control ( ATC) is a general class of train protection systems for railways that involves a speed control mechanism in response to external inputs. For example, a system could effect an emergency brake application if the driver does not react to a signal at danger. ATC systems tend to integrate various cab signalling technologies ...

  6. Airport surveillance radar - Wikipedia

    en.wikipedia.org/wiki/Airport_surveillance_radar

    An airport surveillance radar (ASR) is a radar system used at airports to detect and display the presence and position of aircraft in the terminal area, the airspace around airports. It is the main air traffic control system for the airspace around airports. At large airports it typically controls traffic within a radius of 60 miles (96 km) of ...

  7. Why 'Today' Host Savannah Guthrie Left NBC Morning Show Early

    www.aol.com/entertainment/why-today-host...

    Savannah Guthrie made an abrupt exit from Today — but for a fun reason. After appearing on the first hour of Today, Guthrie, 52, noticeably stepped out of the NBC morning show a few minutes into ...

  8. 'Today' show co-hosts react to Hoda Kotb replacing Matt Lauer

    www.aol.com/article/entertainment/2018/01/02/...

    Megyn Kelly, Kathie Lee Gifford, Savannah Guthrie, Al Roker and more 'Today' show co-hosts took to Twitter to congratulate Hoda Kotb on her promotion.

  9. Air traffic control radar beacon system - Wikipedia

    en.wikipedia.org/wiki/Air_traffic_control_radar...

    The air traffic control radar beacon system ( ATCRBS) is a system used in air traffic control (ATC) to enhance surveillance radar monitoring and separation of air traffic. It consists of a rotating ground antenna and transponders in aircraft. The ground antenna sweeps a narrow vertical beam of microwaves around the airspace.