train-stop relay
11North 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… …
12UK railway signalling — The railway signalling systems used across the majority of the United Kingdom rail network use lineside signals to advise the driver of the status of the section of track ahead. Most lineside signals are in colour light form, but a significant… …
13NSI-63 — is a railway signaling system used for interlocking on the Norwegian railway network. It is based on relays and was developed by Norsk Signal Industri for the Norwegian State Railways (NSB) during the early 1960s. The systems are installed at… …
14Railway air brake — Piping diagram from 1920 of a Westinghouse E T Air Brake system on a locomotive …
151925 serum run to Nome — Statue of Balto, the lead dog on the last relay team. The statue is located in Central Park (NYC) and is dedicated to all the dogs involved in the serum run During the 1925 serum run to Nome, also known as the Great Race of Mercy, 20 mushers and… …
16Centralized 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… …
17Track circuit — A track circuit is a simple electrical device used to detect the presence or absence of a train on rail tracks, used to inform signallers and control relevant signals. Principles and operation The basic principle behind the track circuit lies in… …
18Transmission 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… …
19PATCO Speedline — Overview Type Rapid transit Locale Philadelphia, Pennsylvania and …
20Glossary of contract bridge terms — These terms are used in Contract bridge[1][2] , or the earlier game Auction bridge, using duplicate or rubber scoring. Some of them are also used in Whist, Bid whist, and other trick taking games. This glossary supplements the Glossary of card… …
