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Rail signalling simulation software may be downloaded from www.simsig.co.uk. SimSig has been described by Alan Marshall of the North London Society of Model Engineers as "a remarkable and complex simulator that will test your skills and it demands quite a bit of patience to learn how to operate a modern signal box successfully.". [19]
Train Dispatcher is a train simulator of centralized traffic control (CTC) systems. It was originally developed in the 1980s as a training tool for a commercial railroad and was then made available to the public. The software is currently produced by SoftRail (formerly Signal Computer Consultants) for Windows-based computers.
Signal boxes (1 C, 4 P) Signal passed at danger (1 C, 2 P) T. Train detection systems (4 P) ... Train Dispatcher (computer simulation) Transmission-based train ...
Each distant signal had its own battery, operating at 12.5 V or more; the resistance if the power came directly from the controlling signal box was thought too great (the locomotive equipment required 500 mA). Instead, a 3 V circuit from a switch in the signal box operated a relay in the battery box. When the signal was at 'caution' or 'danger ...
There are two main types of signaling aspect systems found in North America, speed signaling and weak route signaling. [citation needed] Speed signaling transmits information regarding how fast the train is permitted to be going in the upcoming segment of track; weak route signaling transmits information related to the route a train will be taking through a junction, and it is incumbent upon ...
Even if the signalman receives advice that the previous train has left a block, they are usually required to seek permission from the next signal box to admit the next train. When a train arrives at the end of a block section, before the signalman sends the message that the train has arrived, they must be able to see the end-of-train marker on ...
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For convenience in passing it from hand to hand, the token was often in the form of a staff, typically 800 mm (31 in) long and 40 mm (1.6 in) diameter, and is referred to as a train staff. [4] Such a staff is usually literally a wooden staff with a brass plate stating the two signal boxes between which it is valid.