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Entry into an occupied block is prevented by an automatic train protection system (ATP), which supervises both manual and ATC operation and stops the train well before it would enter an occupied block. At switches entering into pocket tracks in a direction reverse to the normal operating direction, there is a "P Signal". The P Signal is a ...
A flight deck manual, usually part of a Quick Reference Handbook: CLR Clear Seen on GFA and is used for sky coverage CMC central maintenance computer CMM component maintenance manual CMO Certificate Management Office: FAA CMV converted meteorological visibility: CMPA complex motor-powered aircraft CMU Communications Management Unit CNS
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.
International Civil Aviation Organization Doc 4444 requires that radar systems should provide for the display of safety-related alerts including the presentation of minimum safe altitude warning. [2] The radar equipment predicts an aircraft’s position in 2 minutes based on present path of flight, and the controller issues a safety alert if ...
The 3-D Full-Scale Earthquake Testing Facility [1] or E-Defense (Japanese: E-ディフェンス) is an earthquake shaking table facility in Miki, Hyōgo Prefecture, Japan. [2] Operated by the Japanese National Research Institute for Earth Science and Disaster Resilience (NIED), [ 3 ] it was the largest 3D earthquake shake table in the world ...
The standard environmental test conditions and test procedures contained within the standard, may be used in conjunction with applicable equipment performance standards, as a minimum specification under environmental conditions, which can ensure an adequate degree of confidence in performance during use aboard an air vehicle.
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 ...
Earthquake modification techniques and modern building codes are designed to prevent total destruction of buildings for earthquakes of no greater than 8.5 on the Richter Scale. [4] Although the Richter Scale is referenced, the localized shaking intensity is one of the largest factors to be considered in building resiliency.