traffic+frequency

См. также в других словарях:

• Frequency of optimum transmission — Frequency of optimum transmission, in the transmission of radio waves via ionospheric reflection, is the highest effective (i.e. working) frequency that is predicted to be usable for a specified path and time for 90% of the days of the month. It… …   Wikipedia

• aerodrome traffic frequency — A frequency designated at an uncontrolled airport. An ATF is used to ensure all radio equipped aircraft operating within the area, normally within a 5 NM radius of the airport, are listening on a common frequency. The ATF is normally the ground… …   Aviation dictionary

• Traffic signal preemption — is a type of system that allows the normal operation of traffic lights to be preempted, often to assist emergency vehicles.[1][2] The most common use of these systems is to manipulate traffic signals in the path of an emergency vehicle, stopping… …   Wikipedia

• Traffic analysis — is the process of intercepting and examining messages in order to deduce information from patterns in communication. It can be performed even when the messages are encrypted and cannot be decrypted. In general, the greater the number of messages… …   Wikipedia

• Traffic engineering (transportation) — Traffic engineering is a branch of civil engineering that uses engineering techniques to achieve the safe and efficient movement of people and goods. It focuses mainly on research and construction of the immobile infrastructure necessary for this …   Wikipedia

• Frequency-division multiple access — or FDMA is an channel access method that is used by radio systems to share a certain radio spectrum between multiple users. The users are individually allocated one or several frequency bands, allowing them to access the radio system without… …   Wikipedia

• Traffic collision — Car crash redirects here. For the Matt Nathanson song, see Some Mad Hope. Vehicle collision Classification and external resources A head on collision of two cars …   Wikipedia

• Traffic sign design — Any tasks involved in the process of designing a traffic sign. Traffic signs give you important information about the law, warn you about dangerous conditions and help you find your way. These signs vary depending upon their use; they use… …   Wikipedia

• Traffic Collision Avoidance System — The Traffic alert and Collision Avoidance System (or TCAS) is an aircraft collision avoidance system designed to reduce the incidence of mid air collisions between aircraft. It monitors the airspace around an aircraft for other aircraft equipped… …   Wikipedia

• Traffic Control — ➡ law enforcement * * * Introduction       supervision of the movement of people, goods, or vehicles to ensure efficiency and safety.       Traffic is the movement of people and goods from one location to another. The movement typically occurs… …   Universalium

• Radio-frequency identification — (RFID) is a technology that uses radio waves to transfer data from an electronic tag, called RFID tag or label, attached to an object, through a reader for the purpose of identifying and tracking the object. Some RFID tags can be read from… …   Wikipedia