Railway Signaling: 1927

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approach lighting 1
Approach Signal Lighting vs. Constant Burning   410.8 KB
Ashland, KY 1
C&O Completes Three-Track Color-Light, Either-Direction Signaling   3.9 MB
Atchison, Topeka & Santa Fe 5
Can Cab Signaling Be Relied Upon Exclusively?   989.8 KB
More Discussion on Approach Lighting   495.0 KB
Organization of Railroad Signal Departments   3.9 MB
Santa Fe Installs Low-Voltage Plant on New Mississippi Bridge   3.0 MB
Santa Fe Is Operating Trains by Cab Signaling With Train Control   6.4 MB
Atlantic Coast Line 1
Checking Up on Signal Observance   774.5 KB
automatic interlocking 1
Why Not Use the Term "Automatic Interlocking"?   907.8 KB
automatic train stop 1
Michigan Central Train Control Approved   800.8 KB
Baltimore & Ohio 3
B&O Celebrates Completion of First 100 Years of Service   3.8 MB
How Many Signal Aspects and Indications?   2.4 MB
The Color Position Light Signal (poem)   435.2 KB
Bayonne, NJ 1
CNJ Completes Interlocking to Safeguard Newark Bay Bridge   4.4 MB
Berwick, OH 1
NYC First to Install Complete Train Dispatching System   8.0 MB
Bimo, MI 1
Half Interlocker on DT&I   565.6 KB
Blue Island, IL 1
Indiana Harbor Belt Rebuilds Flat Yard Into Hump Layout Providing Retarders and Power Switches   2.9 MB
Buffalo, NY 1
Color Light Automatic Block Signals Installed on the New York Central   3.6 MB
call-on signals 1
Design a Circuit to Obtain the Desired Operation of the Call-On Arms   602.2 KB
Canadian National 3
Checking Up on Signal Observance   774.5 KB
Electric Locking Protection at Interlockers Operated Without Derails   1.1 MB
Organization of Railroad Signal Departments   3.9 MB
Canadian Pacific 3
Checking Up on Signal Observance   774.5 KB
Mechanical Interlocker on the Canadian Pacific   1.0 MB
Organization of Railroad Signal Departments   3.9 MB
Central of Georgia 2
Signals Eliminate Written Train Orders   512.8 KB
Train Operation Without Written Train Orders   3.3 MB
Central of New Jersey 1
CNJ Completes Interlocking to Safeguard Newark Bay Bridge   4.4 MB
centralized traffic control 1
NYC First to Install Complete Train Dispatching System   8.0 MB
Chesapeake & Ohio 7
C&O Completes Three-Track Color-Light, Either-Direction Signaling   3.9 MB
Marking Signals When Out of Service   1.1 MB
Multiplicity of Circuits for Operating Call-on Arms   1.5 MB
Several Effective Trap Circuit Schemes   1.4 MB
Should Motor Car Operators Watch Signals More Carefully   1.2 MB
Train Operation Without Written Train Orders   3.3 MB
Various Circuits for Directional Control of Single Track Signals   2.6 MB
Chicago & Eastern Illinois 1
Small Bench Anvil Made from Scrap Rail   378.0 KB
Chicago & North Western 3
Spring Switches Used Extensively on Chicago & North Western   3.4 MB
Unique Highway Crossing Signals Solve Traffic Problem   1.4 MB
Various Circuits for Directional Control of Single Track Signals   2.6 MB
Chicago Great Western 1
Checking Up on Signal Observance   774.5 KB
Chicago South Shore & South Bend 1
Chicago South Shore & South Bend Changes Signal Equipment   2.6 MB
Chicago, Burlington & Quincy 1
Several Effective Trap Circuit Schemes   1.4 MB
Chicago, IL 1
Signaling of IC Chicago Terminal   6.4 MB
Chicago, Indianapolis & Louisville 1
Miller Train Control On the Monon   582.2 KB
Chicago, Milwaukee & St. Paul 2
Comparative Maintenance Costs of Signaling on the CM&StP   2.9 MB
Smash Boards at Automatic Interlockers   423.8 KB
Chicago, Rock Island & Pacific 1
Derail Failure Results in Collision on Crossing   995.6 KB
Chillicothe, IL 1
Santa Fe Is Operating Trains by Cab Signaling With Train Control   6.4 MB
Cincinnati, New Orleans & Texas Pacific 1
Protecting Main Line Switches   486.2 KB
circuits 1
Design a Circuit to Obtain the Desired Operation of the Call-On Arms   602.2 KB
Cleveland, Cincinnati, Chicago & St. Louis 3
Another APB Circuit Explanation   652.9 KB
Is Approach Lighting of Signals Really Economical?   1.2 MB
Should Motor Car Operators Watch Signals More Carefully   1.2 MB
color position light signals 1
The Color Position Light Signal (poem)   435.2 KB
De Kalb, IL 1
Unique Highway Crossing Signals Solve Traffic Problem   1.4 MB
Delaware & Hudson 3
Multiplicity of Circuits for Operating Call-on Arms   1.5 MB
Several Effective Trap Circuit Schemes   1.4 MB
Should Motor Car Operators Watch Signals More Carefully   1.2 MB
Delaware, Lackawanna & Western 1
How Many Signal Aspects and Indications?   2.4 MB
Denver & Rio Grande Western 1
Control of Stop Indication in Approach-Lighted Territory   972.5 KB
Detroit, Toledo & Ironton 1
Half Interlocker on DT&I   565.6 KB
Dryden, G. H. 1
The Color Position Light Signal (poem)   435.2 KB
electric interlocking 1
Maintenance of Interlockings in the Grand Central Terminal   2.8 MB
Elgin, IL 1
Comparative Maintenance Costs of Signaling on the CM&StP   2.9 MB
Elizabethport, NJ 1
CNJ Completes Interlocking to Safeguard Newark Bay Bridge   4.4 MB
Erie 5
Additional Solutions to Call-On Signal Circuit Problem   2.8 MB
How Long Is a Track Circuit?   593.6 KB
Protecting Main Line Switches   486.2 KB
Signals Eliminate Written Train Orders   512.8 KB
Train Operation Without Written Train Orders   3.3 MB
Eureka, MO 1
Missouri Pacific Operates Train in Either Direction on Both Tracks   1.8 MB
Florida East Coast 1
Should Track Circuit Polarities be Staggered?   1.5 MB
Fostoria, OH 1
NYC First to Install Complete Train Dispatching System   8.0 MB
Ft. Madison, IA 2
Santa Fe Installs Low-Voltage Plant on New Mississippi Bridge   3.0 MB
Santa Fe Is Operating Trains by Cab Signaling With Train Control   6.4 MB
General Railway Signal 4
GRS Type K Direct Current Relay   388.0 KB
Michigan Central Train Control Approved   800.8 KB
New Triangular Signal Unit Produced by GRS Co   464.4 KB
NYC First to Install Complete Train Dispatching System   8.0 MB
Grand Central Terminal, New York, NY 1
Maintenance of Interlockings in the Grand Central Terminal   2.8 MB
Grand Trunk Western 1
Additional Solutions to Call-On Signal Circuit Problem   2.8 MB
Great Northern 1
Organization of Railroad Signal Departments   3.9 MB
Green Island, IA 1
Comparative Maintenance Costs of Signaling on the CM&StP   2.9 MB
Griswold Signal 1
Rotating Stop Signal for Highway Grade Crossings   1.0 MB
Hamilton Jct., Ontario 1
Mechanical Interlocker on the Canadian Pacific   1.0 MB
Hammond, IN 1
Miller Train Control On the Monon   582.2 KB
highway crossings 2
Rotating Stop Signal for Highway Grade Crossings   1.0 MB
Unique Highway Crossing Signals Solve Traffic Problem   1.4 MB
Illinois Central 4
Can Cab Signaling Be Relied Upon Exclusively?   989.8 KB
Signaling of IC Chicago Terminal   6.4 MB
Train Operation Without Written Train Orders   3.3 MB
Various Circuits for Directional Control of Single Track Signals   2.6 MB
Indiana Harbor Belt 1
Indiana Harbor Belt Rebuilds Flat Yard Into Hump Layout Providing Retarders and Power Switches   2.9 MB
interlocking 1
Maintenance of Interlockings in the Grand Central Terminal   2.8 MB
Interstate Commerce Commission 1
Michigan Central Train Control Approved   800.8 KB
Jackson, MI 1
Michigan Central Train Control Approved   800.8 KB
Jefferson City, MO 1
Missouri Pacific Operates Train in Either Direction on Both Tracks   1.8 MB
Kensington, IL 1
Michigan Central Train Control Approved   800.8 KB
lamps 1
A Reserve Filament Device to Prevent Light-Out Failures   529.8 KB
Lennoxville, Quebec 1
Canadian Pacific Installs Remote Power Switch at Rebuilt Interlocker   2.2 MB
Louisville & Nashville 1
Control of Stop Indication in Approach-Lighted Territory   972.5 KB
Michigan Central 2
Additional Solutions to Call-On Signal Circuit Problem   2.8 MB
Michigan Central Train Control Approved   800.8 KB
Michigan City, IN 1
Chicago South Shore & South Bend Changes Signal Equipment   2.6 MB
Missouri Pacific 3
Missouri Pacific Operates Train in Either Direction on Both Tracks   1.8 MB
Signals Eliminate Written Train Orders   512.8 KB
Train Operation Without Written Train Orders   3.3 MB
Missouri-Kansas-Texas 2
Should Motor Car Operators Watch Signals More Carefully   1.2 MB
Train Operation Without Written Train Orders   3.3 MB
Monon 1
Miller Train Control On the Monon   582.2 KB
Monon, IN 1
Miller Train Control On the Monon   582.2 KB
Nashville, Chattanooga & St. Louis 5
Is Approach Lighting of Signals Really Economical?   1.2 MB
Multiplicity of Circuits for Operating Call-on Arms   1.5 MB
Several Effective Trap Circuit Schemes   1.4 MB
Should Track Circuit Polarities be Staggered?   1.5 MB
Train Operation Without Written Train Orders   3.3 MB
New York Central 11
Color Light Automatic Block Signals Installed on the New York Central   3.6 MB
Half Interlocker on DT&I   565.6 KB
How Long Is a Track Circuit?   593.6 KB
How Many Signal Aspects and Indications?   2.4 MB
Is Approach Lighting of Signals Really Economical?   1.2 MB
Maintenance of Interlockings in the Grand Central Terminal   2.8 MB
Marking Signals When Out of Service   1.1 MB
NYC First to Install Complete Train Dispatching System   8.0 MB
Organization of Railroad Signal Departments   3.9 MB
Protecting Main Line Switches   486.2 KB
Should Track Circuit Polarities be Staggered?   1.5 MB
New York, New Haven & Hartford 1
How Long Is a Track Circuit?   593.6 KB
New York, NY 1
Maintenance of Interlockings in the Grand Central Terminal   2.8 MB
Newhall, IA 1
Comparative Maintenance Costs of Signaling on the CM&StP   2.9 MB
Niles, MI 1
Michigan Central Train Control Approved   800.8 KB
Norfolk & Western 3
Can Cab Signaling Be Relied Upon Exclusively?   989.8 KB
Marking Signals When Out of Service   1.1 MB
Protecting Main Line Switches   486.2 KB
Northern Pacific 2
Control of Stop Indication in Approach-Lighted Territory   972.5 KB
Should Motor Car Operators Watch Signals More Carefully   1.2 MB
Panama 1
Additional Solutions to Call-On Signal Circuit Problem   2.8 MB
Pennsylvania 5
Derail Failure Results in Collision on Crossing   995.6 KB
Electric Locking Protection at Interlockers Operated Without Derails   1.1 MB
Organization of Railroad Signal Departments   3.9 MB
Protecting Main Line Switches   486.2 KB
Train Operation Without Written Train Orders   3.3 MB
Pequot, IL 1
Santa Fe Is Operating Trains by Cab Signaling With Train Control   6.4 MB
poem 1
The Color Position Light Signal (poem)   435.2 KB
Richton, IL 1
Signaling of IC Chicago Terminal   6.4 MB
Rochester, NY 1
Color Light Automatic Block Signals Installed on the New York Central   3.6 MB
rotating stop signs 1
Rotating Stop Signal for Highway Grade Crossings   1.0 MB
Russell, KY 1
C&O Completes Three-Track Color-Light, Either-Direction Signaling   3.9 MB
Sabula, IA 1
Comparative Maintenance Costs of Signaling on the CM&StP   2.9 MB
Savanna, IL 1
Comparative Maintenance Costs of Signaling on the CM&StP   2.9 MB
Schwendt, B. J. 1
NYC First to Install Complete Train Dispatching System   8.0 MB
Seaboard Air Line 1
Signaling Special Layouts   4.1 MB
Selkirk, NY 1
Color Light Automatic Block Signals Installed on the New York Central   3.6 MB
signaling 1
The Public Is Interested in Signaling   444.4 KB
South Bend, IN 1
Chicago South Shore & South Bend Changes Signal Equipment   2.6 MB
Southern 2
Additional Solutions to Call-On Signal Circuit Problem   2.8 MB
Organization of Railroad Signal Departments   3.9 MB
Southern Pacific 2
Marking Signals When Out of Service   1.1 MB
Should Motor Car Operators Watch Signals More Carefully   1.2 MB
St. Louis-San Francisco 1
Electric Locking Protection at Interlockers Operated Without Derails   1.1 MB
Stanley, OH 1
NYC First to Install Complete Train Dispatching System   8.0 MB
Toledo & Ohio Central 1
NYC First to Install Complete Train Dispatching System   8.0 MB
track circuits 2
Should Track Circuit Polarities Be Staggered   427.4 KB
Should Track Circuit Polarities be Staggered?   1.5 MB
train control 1
The Public Is Interested in Signaling   444.4 KB
Union Pacific 1
Control of Stop Indication in Approach-Lighted Territory   972.5 KB
Utica, NY 1
Color Light Automatic Block Signals Installed on the New York Central   3.6 MB
Wabash 3
Wabash Extending Color Light Signals to Increase Operating Efficiency   4.5 MB
Additional Solutions to Call-On Signal Circuit Problem   2.8 MB
Should Motor Car Operators Watch Signals More Carefully   1.2 MB
West Detroit, MI 1
Michigan Central Train Control Approved   800.8 KB
Wight, S. N. 1
NYC First to Install Complete Train Dispatching System   8.0 MB

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