Railway Signaling: 1927

NOTE:

Although all of these digitized articles are 60 or more years old, and likely have minimal commercial value today, the reader should bear in mind that material dated after 1923 remains under copyright by Simmons-Boardman Publishing.

These articles and the information contained therein may be freely reproduced or used in printed or electronic form for non-commercial or educational purposes, provided the copyright holder and original author (if known) are acknowledged, and provided that such publication also refers readers to the original document on this site.

Simply making interesting material available to those who share my interest in the railway signal systems of the past has been my sole objective in this long project.

Learn more about this collection.

approach lighting 1

1927	Approach Signal Lighting vs. Constant Burning 410.8 KB

Ashland, KY 1

1927	C&O Completes Three-Track Color-Light, Either-Direction Signaling 3.9 MB

Atchison, Topeka & Santa Fe 5

1927	Can Cab Signaling Be Relied Upon Exclusively? 989.8 KB
1927	More Discussion on Approach Lighting 495.0 KB
1927	Organization of Railroad Signal Departments 3.9 MB
1927	Santa Fe Installs Low-Voltage Plant on New Mississippi Bridge 3.0 MB
1927	Santa Fe Is Operating Trains by Cab Signaling With Train Control 6.4 MB

Atlantic Coast Line 1

1927	Checking Up on Signal Observance 774.5 KB

automatic interlocking 1

1927	Why Not Use the Term "Automatic Interlocking"? 907.8 KB

automatic train stop 1

1927	Michigan Central Train Control Approved 800.8 KB

Baltimore & Ohio 3

1927	B&O Celebrates Completion of First 100 Years of Service 3.8 MB
1927	How Many Signal Aspects and Indications? 2.4 MB
1927	The Color Position Light Signal (poem) 435.2 KB

Bayonne, NJ 1

1927	CNJ Completes Interlocking to Safeguard Newark Bay Bridge 4.4 MB

Berwick, OH 1

1927	NYC First to Install Complete Train Dispatching System 8.0 MB

Bimo, MI 1

1927	Half Interlocker on DT&I 565.6 KB

Blue Island, IL 1

1927	Indiana Harbor Belt Rebuilds Flat Yard Into Hump Layout Providing Retarders and Power Switches 2.9 MB

Buffalo, NY 1

1927	Color Light Automatic Block Signals Installed on the New York Central 3.6 MB

call-on signals 1

1927	Design a Circuit to Obtain the Desired Operation of the Call-On Arms 602.2 KB

Canadian National 3

1927	Checking Up on Signal Observance 774.5 KB
1927	Electric Locking Protection at Interlockers Operated Without Derails 1.1 MB
1927	Organization of Railroad Signal Departments 3.9 MB

Canadian Pacific 3

1927	Checking Up on Signal Observance 774.5 KB
1927	Mechanical Interlocker on the Canadian Pacific 1.0 MB
1927	Organization of Railroad Signal Departments 3.9 MB

Central of Georgia 2

1927	Signals Eliminate Written Train Orders 512.8 KB
1927	Train Operation Without Written Train Orders 3.3 MB

Central of New Jersey 1

1927	CNJ Completes Interlocking to Safeguard Newark Bay Bridge 4.4 MB

centralized traffic control 1

1927	NYC First to Install Complete Train Dispatching System 8.0 MB

Chesapeake & Ohio 7

1927	C&O Completes Three-Track Color-Light, Either-Direction Signaling 3.9 MB
1927	Marking Signals When Out of Service 1.1 MB
1927	Multiplicity of Circuits for Operating Call-on Arms 1.5 MB
1927	Several Effective Trap Circuit Schemes 1.4 MB
1927	Should Motor Car Operators Watch Signals More Carefully 1.2 MB
1927	Train Operation Without Written Train Orders 3.3 MB
1927	Various Circuits for Directional Control of Single Track Signals 2.6 MB

Chicago & Eastern Illinois 1

1927	Small Bench Anvil Made from Scrap Rail 378.0 KB

Chicago & North Western 3

1927	Spring Switches Used Extensively on Chicago & North Western 3.4 MB
1927	Unique Highway Crossing Signals Solve Traffic Problem 1.4 MB
1927	Various Circuits for Directional Control of Single Track Signals 2.6 MB

Chicago Great Western 1

1927	Checking Up on Signal Observance 774.5 KB

Chicago South Shore & South Bend 1

1927	Chicago South Shore & South Bend Changes Signal Equipment 2.6 MB

Chicago, Burlington & Quincy 1

1927	Several Effective Trap Circuit Schemes 1.4 MB

Chicago, IL 1

1927	Signaling of IC Chicago Terminal 6.4 MB

Chicago, Indianapolis & Louisville 1

1927	Miller Train Control On the Monon 582.2 KB

Chicago, Milwaukee & St. Paul 2

1927	Comparative Maintenance Costs of Signaling on the CM&StP 2.9 MB
1927	Smash Boards at Automatic Interlockers 423.8 KB

Chicago, Rock Island & Pacific 1

1927	Derail Failure Results in Collision on Crossing 995.6 KB

Chillicothe, IL 1

1927	Santa Fe Is Operating Trains by Cab Signaling With Train Control 6.4 MB

Cincinnati, New Orleans & Texas Pacific 1

1927	Protecting Main Line Switches 486.2 KB

circuits 1

1927	Design a Circuit to Obtain the Desired Operation of the Call-On Arms 602.2 KB

Cleveland, Cincinnati, Chicago & St. Louis 3

1927	Another APB Circuit Explanation 652.9 KB
1927	Is Approach Lighting of Signals Really Economical? 1.2 MB
1927	Should Motor Car Operators Watch Signals More Carefully 1.2 MB

color position light signals 1

1927	The Color Position Light Signal (poem) 435.2 KB

De Kalb, IL 1

1927	Unique Highway Crossing Signals Solve Traffic Problem 1.4 MB

Delaware & Hudson 3

1927	Multiplicity of Circuits for Operating Call-on Arms 1.5 MB
1927	Several Effective Trap Circuit Schemes 1.4 MB
1927	Should Motor Car Operators Watch Signals More Carefully 1.2 MB

Delaware, Lackawanna & Western 1

1927	How Many Signal Aspects and Indications? 2.4 MB

Denver & Rio Grande Western 1

1927	Control of Stop Indication in Approach-Lighted Territory 972.5 KB

Detroit, Toledo & Ironton 1

1927	Half Interlocker on DT&I 565.6 KB

Dryden, G. H. 1

1927	The Color Position Light Signal (poem) 435.2 KB

electric interlocking 1

1927	Maintenance of Interlockings in the Grand Central Terminal 2.8 MB

Elgin, IL 1

1927	Comparative Maintenance Costs of Signaling on the CM&StP 2.9 MB

Elizabethport, NJ 1

1927	CNJ Completes Interlocking to Safeguard Newark Bay Bridge 4.4 MB

Erie 5

1927	Additional Solutions to Call-On Signal Circuit Problem 2.8 MB
1927	How Long Is a Track Circuit? 593.6 KB
1927	Protecting Main Line Switches 486.2 KB
1927	Signals Eliminate Written Train Orders 512.8 KB
1927	Train Operation Without Written Train Orders 3.3 MB

Eureka, MO 1

1927	Missouri Pacific Operates Train in Either Direction on Both Tracks 1.8 MB

Florida East Coast 1

1927	Should Track Circuit Polarities be Staggered? 1.5 MB

Fostoria, OH 1

1927	NYC First to Install Complete Train Dispatching System 8.0 MB

Ft. Madison, IA 2

1927	Santa Fe Installs Low-Voltage Plant on New Mississippi Bridge 3.0 MB
1927	Santa Fe Is Operating Trains by Cab Signaling With Train Control 6.4 MB

General Railway Signal 4

1927	GRS Type K Direct Current Relay 388.0 KB
1927	Michigan Central Train Control Approved 800.8 KB
1927	New Triangular Signal Unit Produced by GRS Co 464.4 KB
1927	NYC First to Install Complete Train Dispatching System 8.0 MB

Grand Central Terminal, New York, NY 1

1927	Maintenance of Interlockings in the Grand Central Terminal 2.8 MB

Grand Trunk Western 1

1927	Additional Solutions to Call-On Signal Circuit Problem 2.8 MB

Great Northern 1

1927	Organization of Railroad Signal Departments 3.9 MB

Green Island, IA 1

1927	Comparative Maintenance Costs of Signaling on the CM&StP 2.9 MB

Griswold Signal 1

1927	Rotating Stop Signal for Highway Grade Crossings 1.0 MB

Hamilton Jct., Ontario 1

1927	Mechanical Interlocker on the Canadian Pacific 1.0 MB

Hammond, IN 1

1927	Miller Train Control On the Monon 582.2 KB

highway crossings 2

1927	Rotating Stop Signal for Highway Grade Crossings 1.0 MB
1927	Unique Highway Crossing Signals Solve Traffic Problem 1.4 MB

Illinois Central 4

1927	Can Cab Signaling Be Relied Upon Exclusively? 989.8 KB
1927	Signaling of IC Chicago Terminal 6.4 MB
1927	Train Operation Without Written Train Orders 3.3 MB
1927	Various Circuits for Directional Control of Single Track Signals 2.6 MB

Indiana Harbor Belt 1

1927	Indiana Harbor Belt Rebuilds Flat Yard Into Hump Layout Providing Retarders and Power Switches 2.9 MB

interlocking 1

1927	Maintenance of Interlockings in the Grand Central Terminal 2.8 MB

Interstate Commerce Commission 1

1927	Michigan Central Train Control Approved 800.8 KB

Jackson, MI 1

1927	Michigan Central Train Control Approved 800.8 KB

Jefferson City, MO 1

1927	Missouri Pacific Operates Train in Either Direction on Both Tracks 1.8 MB

Kensington, IL 1

1927	Michigan Central Train Control Approved 800.8 KB

lamps 1

1927	A Reserve Filament Device to Prevent Light-Out Failures 529.8 KB

Lennoxville, Quebec 1

1927	Canadian Pacific Installs Remote Power Switch at Rebuilt Interlocker 2.2 MB

Louisville & Nashville 1

1927	Control of Stop Indication in Approach-Lighted Territory 972.5 KB

Michigan Central 2

1927	Additional Solutions to Call-On Signal Circuit Problem 2.8 MB
1927	Michigan Central Train Control Approved 800.8 KB

Michigan City, IN 1

1927	Chicago South Shore & South Bend Changes Signal Equipment 2.6 MB

Missouri Pacific 3

1927	Missouri Pacific Operates Train in Either Direction on Both Tracks 1.8 MB
1927	Signals Eliminate Written Train Orders 512.8 KB
1927	Train Operation Without Written Train Orders 3.3 MB

Missouri-Kansas-Texas 2

1927	Should Motor Car Operators Watch Signals More Carefully 1.2 MB
1927	Train Operation Without Written Train Orders 3.3 MB

Monon 1

1927	Miller Train Control On the Monon 582.2 KB

Monon, IN 1

1927	Miller Train Control On the Monon 582.2 KB

Nashville, Chattanooga & St. Louis 5

1927	Is Approach Lighting of Signals Really Economical? 1.2 MB
1927	Multiplicity of Circuits for Operating Call-on Arms 1.5 MB
1927	Several Effective Trap Circuit Schemes 1.4 MB
1927	Should Track Circuit Polarities be Staggered? 1.5 MB
1927	Train Operation Without Written Train Orders 3.3 MB

New York Central 11

1927	Color Light Automatic Block Signals Installed on the New York Central 3.6 MB
1927	Half Interlocker on DT&I 565.6 KB
1927	How Long Is a Track Circuit? 593.6 KB
1927	How Many Signal Aspects and Indications? 2.4 MB
1927	Is Approach Lighting of Signals Really Economical? 1.2 MB
1927	Maintenance of Interlockings in the Grand Central Terminal 2.8 MB
1927	Marking Signals When Out of Service 1.1 MB
1927	NYC First to Install Complete Train Dispatching System 8.0 MB
1927	Organization of Railroad Signal Departments 3.9 MB
1927	Protecting Main Line Switches 486.2 KB
1927	Should Track Circuit Polarities be Staggered? 1.5 MB

New York, New Haven & Hartford 1

1927	How Long Is a Track Circuit? 593.6 KB

New York, NY 1

1927	Maintenance of Interlockings in the Grand Central Terminal 2.8 MB

Newhall, IA 1

1927	Comparative Maintenance Costs of Signaling on the CM&StP 2.9 MB

Niles, MI 1

1927	Michigan Central Train Control Approved 800.8 KB

Norfolk & Western 3

1927	Can Cab Signaling Be Relied Upon Exclusively? 989.8 KB
1927	Marking Signals When Out of Service 1.1 MB
1927	Protecting Main Line Switches 486.2 KB

Northern Pacific 2

1927	Control of Stop Indication in Approach-Lighted Territory 972.5 KB
1927	Should Motor Car Operators Watch Signals More Carefully 1.2 MB

Panama 1

1927	Additional Solutions to Call-On Signal Circuit Problem 2.8 MB

Pennsylvania 5

1927	Derail Failure Results in Collision on Crossing 995.6 KB
1927	Electric Locking Protection at Interlockers Operated Without Derails 1.1 MB
1927	Organization of Railroad Signal Departments 3.9 MB
1927	Protecting Main Line Switches 486.2 KB
1927	Train Operation Without Written Train Orders 3.3 MB

Pequot, IL 1

1927	Santa Fe Is Operating Trains by Cab Signaling With Train Control 6.4 MB

poem 1

1927	The Color Position Light Signal (poem) 435.2 KB

Richton, IL 1

1927	Signaling of IC Chicago Terminal 6.4 MB

Rochester, NY 1

1927	Color Light Automatic Block Signals Installed on the New York Central 3.6 MB

rotating stop signs 1

1927	Rotating Stop Signal for Highway Grade Crossings 1.0 MB

Russell, KY 1

1927	C&O Completes Three-Track Color-Light, Either-Direction Signaling 3.9 MB

Sabula, IA 1

1927	Comparative Maintenance Costs of Signaling on the CM&StP 2.9 MB

Savanna, IL 1

1927	Comparative Maintenance Costs of Signaling on the CM&StP 2.9 MB

Schwendt, B. J. 1

1927	NYC First to Install Complete Train Dispatching System 8.0 MB

Seaboard Air Line 1

1927	Signaling Special Layouts 4.1 MB

Selkirk, NY 1

1927	Color Light Automatic Block Signals Installed on the New York Central 3.6 MB

signaling 1

1927	The Public Is Interested in Signaling 444.4 KB

South Bend, IN 1

1927	Chicago South Shore & South Bend Changes Signal Equipment 2.6 MB

Southern 2

1927	Additional Solutions to Call-On Signal Circuit Problem 2.8 MB
1927	Organization of Railroad Signal Departments 3.9 MB

Southern Pacific 2

1927	Marking Signals When Out of Service 1.1 MB
1927	Should Motor Car Operators Watch Signals More Carefully 1.2 MB

St. Louis-San Francisco 1

1927	Electric Locking Protection at Interlockers Operated Without Derails 1.1 MB

Stanley, OH 1

1927	NYC First to Install Complete Train Dispatching System 8.0 MB

Toledo & Ohio Central 1

1927	NYC First to Install Complete Train Dispatching System 8.0 MB

track circuits 2

1927	Should Track Circuit Polarities Be Staggered 427.4 KB
1927	Should Track Circuit Polarities be Staggered? 1.5 MB

train control 1

1927	The Public Is Interested in Signaling 444.4 KB

Union Pacific 1

1927	Control of Stop Indication in Approach-Lighted Territory 972.5 KB

Utica, NY 1

1927	Color Light Automatic Block Signals Installed on the New York Central 3.6 MB

Wabash 3

1927	Wabash Extending Color Light Signals to Increase Operating Efficiency 4.5 MB
1927	Additional Solutions to Call-On Signal Circuit Problem 2.8 MB
1927	Should Motor Car Operators Watch Signals More Carefully 1.2 MB

West Detroit, MI 1

1927	Michigan Central Train Control Approved 800.8 KB

Wight, S. N. 1

1927	NYC First to Install Complete Train Dispatching System 8.0 MB

Railway Signaling: 1927

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