Simple Signal Circuits
This page presents signal driver circuits that are simple, efficient and inexpensive to build. These circuits provide only solid - RED, YELLOW and GREEN signals.
Light Signals
Railroads use special lights to help engineers run trains. These lights are signals which tell an engineer how to ride on the track ahead of him. In some ways, they are like traffic lights.
Railway signal
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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 drivers/engineers.
Signals in CTC territory is a mixture of controlled and automatic signals.
Dwarf signals are used for minor trackage within interlockings, as starting signals in passenger terminals, and to signal little-used sidings.
Train Signals for Your Model Railroad Layout
Setting up train signals for your layout is another fascinating aspect of using electronics and special wiring effects in model railroading.
Signaling
The next major section which applies to model railroads is the "General Signal Rules." If you've ever leafed through a timetable and have seen the terms “Rule 251,' or “Rule 261,' these are defined here.
Signal Gantry
A framework suspended across several train tracks, and upon which many signals may be mounted.
Signal Section ...
FIXED SIGNAL"Derisive term for a student brakeman standing on a boxcar with his lamp out and a cinder in his eye
FLAG"Assumed name. Many a boomer worked under a flag when his own name was black-listed ...
Backing Signal
A subsidiary signal which is used to control shunting movements within station limits in a direction which is wrong for the line in question.
Signal indicating the train is to move slowly.
EDI
An acronym for Electronic Data Interchange; involves the exchange via computer of information among carriers and between carriers and customers.
Signal located in a locomotive or operating cab that indicates the conditions affecting train movement. Can be used in conjunction with, or in place of, lineside block signals.
Cab unit ...
Signaling, automatic block. A system of signals of fixed location, each located at the entrance to a block, to govern trains and engines entering and using that block.
Signals which govern movements in opposite directions on the same track.
Orders
Train orders transmitted to an operator from a dispatcher, delivered to the conductor for himself and crew.
A signal at the entrance to a block (See Block) indicating whether the block is occupied by a train.
Bolster
The crosswise member of the frame of a car at the truck (body bolster) or the crosswise piece at the center of a truck (truck bolster).
A signal or series of signals, usually automatic, which control a block.
Board
A fixed signal.
A signal controlled automatically.
Automatic Slack Adjuster
A device on freight cars that maintains brake cylinder piston travel at a predetermined length to compensate for wear of brake shoes, wheels, and brake rigging.
Cab Signals
Lights on a control panel in fornt of the engineer which indicate the condition of the track ahead of his train.
The DCC signal is an alternating DC waveform, which contains the digital information, This coded signal controls a specific decoder placed in a specific locomotive causing it to use as much of the track voltage as it needs to move forward or backward, ...
*railway signals *third rails *overhead lines and their supports *electrification systems *platforms *boom barriers *Etcetera ...
Dwarf Signal A signal placed in a significantly lower elevation that others in the system.
Hand Signals Before the advent of radios, signals were given by hand or lantern There were innumerable ways to communicate direction, destination, speed, or stop. Most railroads had their own set of distinct signals.
Mosignal
TRAINZ. In Trainz Objectz, the sub-category within the Track/Trackside category which includes signals (for trains). I do not know whether this is an Auran term or a term devised by Trainz Objectz.
Fixed Signal A signal of fixed location indicating a condition affecting the movement of a train. Flagman The rear brakeman. The great country music singer Jimmie Rodgers used to brag about being a flagman. Reason?
Bracket signal : A semaphore signal array with two or more arms indicating different routes ahead. Often termed a junction signal.
Branch : A portion of railway that diverges from the main line to serve a town or industry.
Distant Signal A signal giving an advanced warning of what the next signal is showing. It has no stop indication. Dog bone A continuous run layout where the two sides of the circle have been "squeezed" together so as to simulate double track.
Jack: A dwarf signal (slang, Boston and Maine and New York New Haven and Hartford Railroads) ...
Norfolk and Western Signal Diagrams: Norfolk and Western Historical Society, Inc.
The Story of Fuel Satisfaction N&W document reprinted by the Norfolk and Western Historical Society, Inc.
Norfolk Southern ...
It also receives RF signals from CAB-1, but sends only signals down a track whose power is controlled by another means (a PM-1 or conventional transformer). Unlike PM-1, only one Command Base is required for and entire layout.
Absolute Permissive Block (APB) A designated section of track or tracks within which the movement of trains will be governed by block signals, whose indications supersede the superiority of trains.
RT Acceptance In UK railway signalling terms, 'acceptance' means the permission given by a signalman for a train to enter the section of line he controls.
Green Eye A slang term for a clear signal.
H
Highball A signal given to proceed at maximum permissible speed. Hog A locomotive Hoghead, Hogger A railroad engineer Horsepower per Trailing Ton.
Signal, highway, electric. A highway crossing signal which is actuated automatically by the approach of a train and which then displays one or any combination of several features such as red lights (flashing or nonflashing) horizontally swinging disk, ...
Uptrends that exceed the tops of previous uptrends may be taken as buying signals. Downtrends that exceed the bottoms of previous downtrends may be taken as selling signals.
This system has a handheld transmitter that sends radio or infra-red signals to a receiver connected between a normal power supply and the track. The range is up to 300 feet and no cable is involved.
In the days of semaphore signals, a few UK railways - notably the Great Western - used lower quadrant signals. This meant that a horizontal arm meant stop whereas an arm pointing downwards at an angle meant proceed (clear). Contrast upper quadrant.
Command control Sends signals through the rails, decoded by locomotives. On the same tracks, but running independent of one another.
Consist List of cars that make up a train.
Craze When glues ruin the surface of uncompatible plastic.
The train proceeds until it reaches the stopping section at a red signal. If you are alert and ease the throttle on approach the illusion improves.
Interlocking Tower - Often called signal or switch towers, these elevated railroad structures house mechanical or electrical signal and turnout control equipment.
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Lighted animation includes a billboard with 28 running lights, lighted traffic and railroad signals, flashing lights on the circus scene, and flickering lights in two theaters to simulate a movie. Next is a Seuthe smoke chimney for the bakery.
Consider it a handy abbreviation that describes not only the modeling scale but also the track gauge used for a particular model pike. The "n" signals that it is narrow gauge -- in this case, 3 feet. (Standard gauge track has rails 4'8-1/2" apart.
 See also: Track, Train, Engine, Switch, Locomotive
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