train control relay
1Centralized traffic control — (CTC) is a signalling system used by railroads. The system consists of a centralized train dispatcher s office that controls railroad switches in the CTC territory and the signals that railroad engineers must obey in order to keep the traffic… …
2Zibo train collision — Coordinates: 36°41′35″N 117°46′53″E / 36.69306°N 117.78139°E / 36.69306; 117.78139 …
3Integrated Electronic Control Centre — centres, although variations exist around the world. Up to 2005, an aggregate of 140 operational years of reliable service had been achieved overall.It consists of an operator’s workstation with a series of VDU/LCD displays which depict the… …
4High-Level Data Link Control — (HDLC) is a bit oriented synchronous data link layer protocol developed by the International Organization for Standardization (ISO). The original ISO standards for HDLC were: *ISO 3309 mdash; Frame Structure *ISO 4335 mdash; Elements of Procedure …
54th Space Control Squadron — Infobox Military Unit unit name= 4th Space Control Squadron caption= 4th Space Control Squadron emblem dates= 1986 Present country= United States allegiance= branch= United States Air Force type= Space Control role= Offensive Counterspace… …
6Railway signal — Not to be confused with Railway signalling. A signal is a mechanical or electrical device erected beside a railway line to pass information relating to the state of the line ahead to train/engine drivers. The driver interprets the signal s… …
7Railway signalling — Not to be confused with Railway signal. A gantry of British semaphore signals seen from the cab of a steam locomotive Railway signalling is a system used to control railway traffic safely, essentially to prevent trains from colliding. Being… …
8North 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… …
9railroad — /rayl rohd /, n. 1. a permanent road laid with rails, commonly in one or more pairs of continuous lines forming a track or tracks, on which locomotives and cars are run for the transportation of passengers, freight, and mail. 2. an entire system… …
10Transmission Voie-Machine — (TVM), or track to train transmission , is a form of in cab signalling used on lignes à grande vitesse (high speed railway lines based on the French TGV system) that differs considerably from signalling on conventional railway lines. Because TGV… …
