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  2. Automatic train stop - Wikipedia

    en.wikipedia.org/wiki/Automatic_train_stop

    Automatic train stop or ATS is a system on a train that automatically stops a train if certain situations occur (unresponsive train operator, earthquake, disconnected rail, train running over a stop signal, etc.) to prevent accidents.

  3. Equipment codes - Wikipedia

    en.wikipedia.org/wiki/Equipment_codes

    Regardless of the form used, air traffic controllers (ATC) issue clearances based on filed equipment codes, therefore it is important for pilots to use the appropriate coding. For example, if a desired route requires GPS , then the pilot should file /G, even if the aircraft also qualifies for other suffixes (this may be moot due to new RNAV ...

  4. List of aviation, avionics, aerospace and aeronautical ...

    en.wikipedia.org/wiki/List_of_aviation,_avionics...

    ATC FIS Federal Inspection Services FIS-B Flight information services – broadcast FISE flight information service enroute FL flight level: ATC FLIR Forward-looking infra-red FLTA Forward-looking terrain avoidance FM frequency modulation: Example: FM immunity FMA flight mode annunciator: Equipment FMC flight management computer (part of a FMS ...

  5. Automatic train control - Wikipedia

    en.wikipedia.org/wiki/Automatic_train_control

    D-ATC indicator used on the E233 series trains. The digital ATC system uses the track circuits to detect the presence of a train in the section and then transmits digital data from wayside equipment to the train on the track circuit numbers, the number of clear sections (track circuits) to the next train ahead, and the platform that the train will arrive at.

  6. Automatic test equipment - Wikipedia

    en.wikipedia.org/wiki/Automatic_test_equipment

    Automatic test equipment diagnostics is the part of an ATE test that determines the faulty components. ATE tests perform two basic functions. The first is to test whether or not the Device Under Test is working correctly. The second is when the DUT is not working correctly, to diagnose the reason.

  7. United States Army Test and Evaluation Command - Wikipedia

    en.wikipedia.org/wiki/United_States_Army_Test...

    The U.S. Army Test and Evaluation Command, or ATEC, is a direct reporting unit of the United States Army responsible for developmental testing, independent operational testing, independent evaluations, assessments, and experiments of Army equipment.

  8. Washington Metro signaling and operation - Wikipedia

    en.wikipedia.org/wiki/Washington_Metro_signaling...

    From the June 2009 collision until 2015, Metrorail operators operated the trains exclusively in manual mode; the ATC system was restored to the Red Line in 2015. [3] The automatic train protection system still limits the maximum speed of every train that is in revenue service. ATO has been restored on the Red Line on December 15, 2024 after 15 ...

  9. Advanced Civil Speed Enforcement System - Wikipedia

    en.wikipedia.org/wiki/Advanced_Civil_Speed...

    The on-board equipment tracks the train's position by counting wheel rotations between the transponders, which also serve as fixed location references. In the event a train's crew exceeds a speed restriction a penalty brake application is applied bringing the train to a complete stop [ 3 ] : 350 in the same fashion as existing automatic train ...

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