Radio communications during the September 11 attacks — This article reviews some of the details of radio communications at the September 11, 2001 World Trade Center attacks. [The purpose of revealing the operational details in this article is to allow operators of other communications networks and… … Wikipedia
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
Radio propagation — is a term used to explain how radio waves behave when they are transmitted, or are propagated from one point on the Earth to another. [ H. P. Westman et al, (ed), Reference Data for Radio Engineers, Fifth Edition , 1968, Howard W. Sams and Co.,… … Wikipedia
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
Traffic — on roads may consist of pedestrians, ridden or herded animals, vehicles, streetcars and other conveyances, either singly or together, while using the public way for purposes of travel. Traffic laws are the laws which govern traffic and regulate… … 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
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 Channel — Ein Traffic Channel (TCH) (deutsch: Verkehrskanal) ist ein Kanal in einem Mobilfunknetz, über den Daten oder Sprache übertragen wird. GSM Verkehrskanäle Die Verkehrskanäle des GSM Mobilfunkystems können nach ihrer Nutzung in 3 Gruppen eingeteilt… … Deutsch Wikipedia
Radio direction finder — Civil Air Patrol members practice using a handheld radio direction finder to locate an emergency locator transmitter … Wikipedia
Radio Network Controller — The Radio Network Controller (or RNC) is the governing element in the UMTS radio access network (UTRAN) responsible for control of the Node Bs, that is to say the base stations which are connected to the controller. The RNC carries out radio… … Wikipedia
Right- and left-hand traffic — countries with right hand traffic … Wikipedia