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The ATCS architecture consists of five major systems. Four of these systems are the information processing systems that reside at the central dispatch office (the Central Dispatch Computer), on-board locomotives (the On-Board Computer), on-board work vehicles (the Track Forces Terminal) and in the field (the Wayside Interface Unit).
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Safetran VIU-ACSES Field Encoder monitors wayside status information and sends track signal states through the ground network to locomotives.. The on-board equipment consists of a computer that also stores the route characteristics database, a distance measurement subsystem to track train position, an antenna subsystem for the track mounted balises, and a data radio subsystem for communication ...
Adaptive traffic control system (ATCS) is a traffic management strategy in which traffic signal timing changes, or adapts, based on actual traffic demand. This is accomplished using an adaptive traffic control system consisting of both hardware and software.
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Air traffic controllers (ATCs) are people responsible for the coordination of traffic in their assigned airspace. Typically stationed in air traffic control centers or control towers , they monitor the position, speed, and altitude of aircraft and communicate with the pilots via radio.
The ATCS protocol, which the AAR had recommended the FCC consider as PTC in 2000 (when AAR sought a nationwide 900 MHz "ribbon" license), [42] can support train control operation at both 900 MHz and 160 MHz. [43] The latter frequency band is only used for ATCS on a few subdivisions and shortlines.