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safety signal

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  • Signal passed at danger — (SPAD), in railway terminology, describes an event where a train has run beyond its allocated signal block without authority, as indicated by a lineside signal showing danger (typically a red light). It is a term primarily used within the British …   Wikipedia

  • Signal timing — is the technique which traffic engineers use to determine who has the right of way at an intersection. Signal timing involves deciding how much green time the traffic lights shall provide at an intersection approach, how long the pedestrian WALK… …   Wikipedia

  • Signal crime — is a concept in reassurance policing. It centres around the theory that certain crimes or incidents of anti social behaviour may act as a signal to a community that they are at risk. Examples commonly given are vandalism of phone boxes and bus… …   Wikipedia

  • Safety car — In motorsport, a safety car or pace car is a car which limits the speed of competing cars on a racetrack in the case of a caution period such as a major accident or obstruction on the track. During a caution period the safety car enters the track …   Wikipedia

  • Signal (bridge) — In the card game of contract bridge, partners defending against a contract may play particular cards in a manner which gives a signal or coded meaning to guide their subsequent card play; also referred to as carding. Contents 1 Standard signals 1 …   Wikipedia

  • Safety instrumented system — A Safety Instrumented System (SIS) is a form of process control usually implemented in industrial processes, such as those of a factory or an oil refinery. The SIS performs specified functions to achieve or maintain a safe state of the process… …   Wikipedia

  • Safety Camera Partnership — See also: Traffic enforcement camera A Safety Camera Partnership (also Casualty Reduction Partnership, Safer Roads Partnership) is a local multi agency partnership between Local Government, police authorities, HMCS, Highways Agency and the… …   Wikipedia

  • Safety coffin — A safety coffin or security coffin is a coffin fitted with a mechanism to prevent premature burial or allow the occupant to signal that he has been buried alive. A large number of designs for safety coffins were patented during the 18th and 19th… …   Wikipedia

  • Safety package — A safety package is a set of functional features of a vehicle that are intended to reduce the likelihood of a crash or enhance survivability or injury reduction. Many items once included at extra cost are now standard items, being mandated by… …   Wikipedia

  • safety stop — noun : any of various devices to stop an undesirable motion or action: as a. : an attachment for an elevator to prevent accidental falling b. : a device that closes a supply valve and stops an engine in case of accident to the governor belt c. :… …   Useful english dictionary

  • Automatic Block Signal — Basic Automatic Block Signals = Automatic Block Signal, or ABS, systems consist of a series of signals that govern blocks of track between the signals. The signals are automatically activated by the conditions of the block beyond the signal.… …   Wikipedia

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