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  2. Advanced transportation controller - Wikipedia

    en.wikipedia.org/wiki/Advanced_transportation...

    The advanced transportation controller (ATC) is a standardization effort being undertaken by the United States Department of Transportation as part of their Intelligent transportation system (ITS) efforts. The ATC is being developed to provide an open platform for hardware and software for a wide variety of ITS applications.

  3. Automatic train control - Wikipedia

    en.wikipedia.org/wiki/Automatic_train_control

    Japanese-style ATC cab signalling indicator. 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.

  4. Advanced Train Control System - Wikipedia

    en.wikipedia.org/wiki/Advanced_Train_Control_System

    An Advanced Train Control System (ATCS) is a North American system of railroad equipment designed to ensure safety by monitoring locomotive and train locations, providing analysis and reporting, automating track warrants, detecting blind spot and similar orders.

  5. Indoor–outdoor thermometer - Wikipedia

    en.wikipedia.org/wiki/Indoor–outdoor_thermometer

    In an indoor–outdoor thermometer based on a conventional liquid-in-glass thermometer, the stem of the outdoor thermometer is connected to the bulb by a long, flexible or semi-rigid capillary. The temperature scale is marked on the stem as usual. However, the temperature that is actually measured is the temperature at the bulb. [1]

  6. Air traffic controller - Wikipedia

    en.wikipedia.org/wiki/Air_traffic_controller

    Additionally controllers must report all medications they are taking, even over-the-counter drugs to the responsible medical authority. [52] In the US numerous drugs approved by the U.S. Food and Drug Administration (FDA) are either banned or require an air traffic controller to apply for a Special Consideration Medical Certificate and undergo ...

  7. 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 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 is to prevent collisions, organize and expedite the flow of traffic in ...

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