work undertaken by an individual a computation undertaken by a computer program or a process undertaken by an organization).
ĮTA is also used metaphorically in situations where nothing actually moves physically, as in describing the time estimated for a certain task to complete (e.g. This particular method does not take into account any unexpected events (such as new wind directions) which may occur on the way to the flight's destination. The remaining distance is divided by the speed previously measured to roughly estimate the arrival time. This information is often conveyed to a passenger information system as part of the core functionality of intelligent transportation systems.įor example, a certain flight may have a calculated ETA based on the speed by which it has covered the distance traveled so far. In this respect, the phrase or its abbreviation is often paired with its complement, estimated time of departure ( ETD), to indicate the expected start time of a particular journey. One of the more common uses of the phrase is in public transportation where the movements of trains, buses, airplanes and the like can be used to generate estimated times of arrival depending on either a static timetable or through measurements on traffic intensity. The estimated time of arrival ( ETA) is the time when a ship, vehicle, aircraft, cargo, emergency service, or person is expected to arrive at a certain place. Time when something is expected to arrive at a certain place
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