Useful english dictionary. 2012.
Signals on the TTC — The Toronto Transit Commission, or TTC, like most transit systems, uses a system of light based signals to give instructions to their trains. They use block signals commonly, as well as interlocking signals. The TTC uses the NX/UR system of… … Wikipedia
interlocking tower — interlocking tower, a building or tower from which the switches and signals of a railroad yard or section of the line are controlled … Useful english dictionary
Interlocking — In railway signaling, an interlocking is an arrangement of signal apparatus that prevents conflicting movements through an arrangement of tracks such as junctions or crossings. The signaling appliances and tracks are sometimes collectively… … Wikipedia
interlocking device — A device at a railroad crossing installed to control the signals and gates so that one will not be working independently of the other. Anno: 40 ALR 758 … Ballentine's law dictionary
North American railroad signals — Main article: North American railway signaling Baltimore and Ohio Railroad Color Position Light bracket masts at Magnolia, West Virginia North American railroad signals generally fall into the category of multi headed electrically lit units… … Wikipedia
Application of railway signals — Semaphore stop signals protecting the convergence of two tracks into one The application of railway signals on a rail layout is determined by various factors, principally the location of points of potential conflict, as well as the speed and… … Wikipedia
Japanese railway signals — This article explains railway signals in Japan.In Japanese ministerial decree defining technical standard of railway (鉄道に関する技術上の基準を定める省令 Tetsudō ni kansuru gijutsu jō no kijun wo sadameru shōrei), railway signals are defined to indicate… … Wikipedia
Solid State Interlocking — (SSI) is the brand name of the first generation processor based interlocking developed in the 1980s by British Rail, GEC General Signal and Westinghouse Signals Ltd in the UK. Interlocking hardware SSI utilises a 2 out of 3 architecture, whereby… … Wikipedia
British railway signals — Modern British signalling is based on a two, three and four aspect colour light system using non permissive block rules. It is a basic progression of the original semaphore signalling that can still be found on many secondary lines. Colour light… … Wikipedia
Toronto subway and RT — A T series train at Sheppard–Yonge station on the Sheppard line … Wikipedia
