Railway Signaling: 1931

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.

1931 1

1931	1931 index 6.6 MB

30th Street Station, Philadelphia, PA 1

1931	Signaling the Philadelphia Terminal of the Pennsylvania 8.9 MB

accident 1

1931	A Lesson from a False-Clear Failure 572.9 KB

Arlington Heights, IL 1

1931	Three-Track Signaling on 13.5 Miles of the C&NW 5.4 MB

Arlington Park, IL 1

1931	Three-Track Signaling on 13.5 Miles of the C&NW 5.4 MB

Atchison, Topeka & Santa Fe 2

1931	Oil or Electric Switch Lamps? 1.8 MB
1931	Why Not Eliminate Train Stops at Permissive Wayside Signals 763.1 KB

Atlantic Coast Line 2

1931	Call-on Route Control 1.4 MB
1931	Precision-Base Lamps 1.4 MB

automatic interlocking 2

1931	State Commission Formulates Requirements of Automatic Interlockers 2.3 MB
1931	What Can Be Done Now? 736.8 KB

Baltimore & Ohio 1

1931	Point Detector or Switch Circuit Controller for CTC Switches? 835.1 KB

Baltimore & Ohio Chicago Terminal 2

1931	Automatic Interlocker Protects Gauntlet Track 1.4 MB
1931	One Electric Interlocking for Two Drawbridges 3.1 MB

Barrington, IL 1

1931	Three-Track Signaling on 13.5 Miles of the C&NW 5.4 MB

Belmont, CA 1

1931	Speed Control of Crossing Signals 586.7 KB

Berwick, OH 1

1931	Results of Centralized Control on NYC 703.8 KB

Birmingham, MO 1

1931	Signaling the New Kansas City Line of the Rock Island-Milwaukee 6.4 MB

Boston & Maine 2

1931	Economy of Smaller Towers 539.7 KB
1931	Efficiency Tests 1.9 MB

Broad St., Philadelphia, PA 2

1931	Pennsylvania Cuts Over Large Interlocking Plant Without Delaying Traffic 2.6 MB
1931	Signaling the Philadelphia Terminal of the Pennsylvania 8.9 MB

Buffalo, Rochester & Pittsburgh 1

1931	Efficiency Tests 1.9 MB

California 1

1931	State Commission Formulates Requirements of Automatic Interlockers 2.3 MB

Camp Douglas, WI 1

1931	Report on Milwaukee-Omaha Collision 1.5 MB

Canadian National 1

1931	Proceed Aspects for Isolated Home Signals 1.4 MB

Canadian Pacific 1

1931	Economy of Smaller Towers 539.7 KB

Central of New Jersey 2

1931	Centralized Traffic Control Postpones Four-Tracking on Central of New Jersey 3.0 MB
1931	Light-Out Protection 1.0 MB

centralized traffic control 8

1931	A Definition for Centralized Traffic Control 1.3 MB
1931	Centralized Traffic Control on the Peoria & Pekin Union 6.7 MB
1931	Centralized Traffic Control Postpones Four-Tracking on Central of New Jersey 3.0 MB
1931	Centralized vs. Remote Control 1.2 MB
1931	CTC Without Power-Operated Switches 1.8 MB
1931	Protecting CTC Switches 2.9 MB
1931	Results of Centralized Control on NYC 703.8 KB
1931	What Can Be Done Now? 736.8 KB

Chemin de fer de l'Est 1

1931	French Railways Adopt Color-Light Signals 1.3 MB

Cherry Street, Toronto, Ontario 1

1931	Interlocking System Installed at Toronto Union Station 4.6 MB

Chicago & Illinois Midland 1

1931	Chicago & Illinois Midland Installs Electric Interlocking 2.5 MB

Chicago & North Western 3

1931	Remotely-Controlled Interlocking Solves Problem on C&NW 1.9 MB
1931	Three-Track Signaling on 13.5 Miles of the C&NW 5.4 MB
1931	Why Not Eliminate Train Stops at Permissive Wayside Signals 763.1 KB

Chicago Great Western 1

1931	Chicago Great Western Saves $7,000 Annually by Remote Control of Tunnel Interlockings 3.7 MB

Chicago, Burlington & Quincy 4

1931	Call-on Route Control 1.4 MB
1931	CB&Q Installs Electric Interlockinig 3.3 MB
1931	New Control System Used at Electric Interlocking on the Burlington 3.5 MB
1931	Point Detector or Switch Circuit Controller for CTC Switches? 835.1 KB

Chicago, IL 2

1931	Michigan Central Makes Extensive Improvements in Signaling System 3.3 MB
1931	One Electric Interlocking for Two Drawbridges 3.1 MB

Chicago, Milwaukee, St. Paul & Pacific 5

1931	Efficiency Tests 1.9 MB
1931	Fight for Your Job 3.0 MB
1931	Preparation of Signal Circuit Plans 2.0 MB
1931	Report on Milwaukee-Omaha Collision 1.5 MB
1931	Signaling the New Kansas City Line of the Rock Island-Milwaukee 6.4 MB

Chicago, Rock Island & Pacific 5

1931	Another Unique Interlocker on the Rock Island 1.4 MB
1931	Economy of Smaller Towers 539.7 KB
1931	Signaling the New Kansas City Line of the Rock Island-Milwaukee 6.4 MB
1931	Twelve-Track Yard Indicator on the Rock Island 888.5 KB
1931	Why Not Eliminate Train Stops at Permissive Wayside Signals 763.1 KB

Chicago, St. Paul, Minneapolis & Omaha 1

1931	Report on Milwaukee-Omaha Collision 1.5 MB

Cleveland, Cincinnati, Chicago & St. Louis 3

1931	Economy of Smaller Towers 539.7 KB
1931	Efficiency Tests 1.9 MB
1931	Sequence of Levers 552.2 KB

Danville, IL 1

1931	Centralized Traffic Control Installed on Wabash 5.6 MB

Delaware & Hudson 1

1931	Protecting CTC Switches 2.9 MB

Delaware, Lackawanna & Western 2

1931	Preparation of Signal Circuit Plans 2.0 MB
1931	The Signaling of the Lackawanna Electrified Territory 5.9 MB

Des Plaines, IL 1

1931	Three-Track Signaling on 13.5 Miles of the C&NW 5.4 MB

Detroit, MI 1

1931	Michigan Central Makes Extensive Improvements in Signaling System 3.3 MB

Deval, IL 1

1931	Three-Track Signaling on 13.5 Miles of the C&NW 5.4 MB

Dover, NJ 1

1931	The Signaling of the Lackawanna Electrified Territory 5.9 MB

Downers Grove, IL 1

1931	New Control System Used at Electric Interlocking on the Burlington 3.5 MB

economics 1

1931	Competition 774.2 KB

Edison, Thomas 1

1931	Thomas A. Edison (obituary) 1.1 MB

Erie 1

1931	Erie Increases Track Capacity on Busy Section of Double Track 2.6 MB

false clear failures 1

1931	A Lesson from a False-Clear Failure 572.9 KB

France 1

1931	French Railways Adopt Color-Light Signals 1.3 MB

Galesburg, IL 1

1931	CB&Q Installs Electric Interlockinig 3.3 MB

General Railway Signal 1

1931	Three-Track Signaling on 13.5 Miles of the C&NW 5.4 MB

Gladstone, NJ 1

1931	The Signaling of the Lackawanna Electrified Territory 5.9 MB

government subsidies 1

1931	Competition 774.2 KB

Grand Trunk Western 1

1931	Oil or Electric Switch Lamps? 1.8 MB

Great Britain 2

1931	Automatic Train Control on Great Western of England 1.7 MB
1931	British Report on Automatic Train Control 2.6 MB

Great Northern 2

1931	Efficiency Tests 1.9 MB
1931	Precision-Base Lamps 1.4 MB

Great Western 2

1931	Automatic Train Control on Great Western of England 1.7 MB
1931	British Report on Automatic Train Control 2.6 MB

Hammond, IN 1

1931	Automatic Interlocker Protects Gauntlet Track 1.4 MB

HD Jct., MO 1

1931	Missouri Pacific Installs Centralized Traffic Control on 32 Miles of Double Track 2.7 MB

Herington, KS 2

1931	Another Unique Interlocker on the Rock Island 1.4 MB
1931	Twelve-Track Yard Indicator on the Rock Island 888.5 KB

Hoboken, NJ 1

1931	The Signaling of the Lackawanna Electrified Territory 5.9 MB

Illinois Central 2

1931	Preparation of Signal Circuit Plans 2.0 MB
1931	Why Not Eliminate Train Stops at Permissive Wayside Signals 763.1 KB

index 1

1931	1931 index 6.6 MB

Indianapolis Union 1

1931	Indianapolis Union Station Installs Electro-Pneumatic Interlocking 4.7 MB

Indianapolis, IN 1

1931	Indianapolis Union Station Installs Electro-Pneumatic Interlocking 4.7 MB

Interstate Commerce Commission 1

1931	A Lesson from a False-Clear Failure 572.9 KB

IU Tower, Indianapolis, IN 1

1931	Indianapolis Union Station Installs Electro-Pneumatic Interlocking 4.7 MB

John Street, Toronto, Ontario 1

1931	Interlocking System Installed at Toronto Union Station 4.6 MB

Lackawaxen, PA 1

1931	Erie Increases Track Capacity on Busy Section of Double Track 2.6 MB

Lafayette, IN 1

1931	Centralized Traffic Control Installed on Wabash 5.6 MB

Lanes Crossing, NJ 1

1931	Centralized Traffic Control Postpones Four-Tracking on Central of New Jersey 3.0 MB

London Metropolitan 1

1931	Metropolitan Railway of London Resignaling with Modern Equipment 1.8 MB

London Underground 1

1931	British Report on Automatic Train Control 2.6 MB

London, England 2

1931	British Report on Automatic Train Control 2.6 MB
1931	Metropolitan Railway of London Resignaling with Modern Equipment 1.8 MB

Louisville & Nashville 2

1931	Derails in Passing Sidings 1.1 MB
1931	Preparation of Signal Circuit Plans 2.0 MB

Michigan Central 1

1931	Michigan Central Makes Extensive Improvements in Signaling System 3.3 MB

Missouri Pacific 6

1931	Another Unique Interlocker on the Rock Island 1.4 MB
1931	CTC Without Power-Operated Switches 1.8 MB
1931	Missouri Pacific Installs Centralized Traffic Control on 32 Miles of Double Track 2.7 MB
1931	Point Detector or Switch Circuit Controller for CTC Switches? 835.1 KB
1931	Precision-Base Lamps 1.4 MB
1931	Protecting CTC Switches 2.9 MB

Montclair, NJ 1

1931	The Signaling of the Lackawanna Electrified Territory 5.9 MB

Mott Haven, NY 2

1931	New York Central Re-Signals Track Entering Grand Central Terminal 4.0 MB
1931	The Mott Haven Interlocking 3.7 MB

Nashville, Chattanooga & St. Louis 1

1931	Fight for Your Job 3.0 MB

Nelson, IL 1

1931	Remotely-Controlled Interlocking Solves Problem on C&NW 1.9 MB

New York Central 9

1931	Centralized vs. Remote Control 1.2 MB
1931	Locks for Mechanical Levers 991.9 KB
1931	New York Central Re-Signals Track Entering Grand Central Terminal 4.0 MB
1931	Point Detector or Switch Circuit Controller for CTC Switches? 835.1 KB
1931	Precision-Base Lamps 1.4 MB
1931	Proceed Aspects for Isolated Home Signals 1.4 MB
1931	Protecting CTC Switches 2.9 MB
1931	Results of Centralized Control on NYC 703.8 KB
1931	The Mott Haven Interlocking 3.7 MB

New York, Chicago & St. Louis 1

1931	Efficiency Tests 1.9 MB

New York, New Haven & Hartford 1

1931	Proceed Aspects for Isolated Home Signals 1.4 MB

New York, NY 2

1931	New York Central Re-Signals Track Entering Grand Central Terminal 4.0 MB
1931	The Mott Haven Interlocking 3.7 MB

Newark, NJ 1

1931	Movable Bridges and Yard Entrance Layouts Controlled from One Cabin 4.5 MB

Niagara Falls, Ontario 1

1931	Michigan Central Makes Extensive Improvements in Signaling System 3.3 MB

Norfolk & Western 1

1931	Call-on Route Control 1.4 MB

Northern Pacific 2

1931	Derails in Passing Sidings 1.1 MB
1931	Efficiency Tests 1.9 MB

obituary 1

1931	Thomas A. Edison (obituary) 1.1 MB

Omaha, NE 1

1931	Three Large Interlockings Installed by Union Pacific at Omaha 6.2 MB

Pekin, IL 1

1931	Centralized Traffic Control on the Peoria & Pekin Union 6.7 MB

Penn, Philadelphia, PA 1

1931	Signaling the Philadelphia Terminal of the Pennsylvania 8.9 MB

Pennsylvania 10

1931	Centralized vs. Remote Control 1.2 MB
1931	Circuit for Signal Demonstration 490.2 KB
1931	Derails in Passing Sidings 1.1 MB
1931	Movable Bridges and Yard Entrance Layouts Controlled from One Cabin 4.5 MB
1931	Oil or Electric Switch Lamps? 1.8 MB
1931	Pennsylvania Cuts Over Large Interlocking Plant Without Delaying Traffic 2.6 MB
1931	Preparation of Signal Circuit Plans 2.0 MB
1931	Protecting CTC Switches 2.9 MB
1931	Signaling for Electrified Operation 3.5 MB
1931	Signaling the Philadelphia Terminal of the Pennsylvania 8.9 MB

Peoria & Pekin Union 1

1931	Centralized Traffic Control on the Peoria & Pekin Union 6.7 MB

Peoria, IL 1

1931	Centralized Traffic Control on the Peoria & Pekin Union 6.7 MB

personal 1

1931	Thomas A. Edison (obituary) 1.1 MB

Peru, IN 1

1931	Centralized Traffic Control Installed on Wabash 5.6 MB

Philadelphia, PA 3

1931	Pennsylvania Cuts Over Large Interlocking Plant Without Delaying Traffic 2.6 MB
1931	Signaling for Electrified Operation 3.5 MB
1931	Signaling the Philadelphia Terminal of the Pennsylvania 8.9 MB

Polo, MO 1

1931	Signaling the New Kansas City Line of the Rock Island-Milwaukee 6.4 MB

Raritan, NJ 1

1931	Centralized Traffic Control Postpones Four-Tracking on Central of New Jersey 3.0 MB

remote control 1

1931	What Can Be Done Now? 736.8 KB

reserve yellow 1

1931	Three-Track Signaling on 13.5 Miles of the C&NW 5.4 MB

Rice, IL 1

1931	Chicago Great Western Saves $7,000 Annually by Remote Control of Tunnel Interlockings 3.7 MB

Rosas, PA 1

1931	Erie Increases Track Capacity on Busy Section of Double Track 2.6 MB

Ruislip, England 1

1931	Metropolitan Railway of London Resignaling with Modern Equipment 1.8 MB

Scott Street, Toronto, Ontario 1

1931	Interlocking System Installed at Toronto Union Station 4.6 MB

Secaucus, NJ 1

1931	The Signaling of the Lackawanna Electrified Territory 5.9 MB

South Branch Bridge 1

1931	One Electric Interlocking for Two Drawbridges 3.1 MB

Southern 1

1931	Derails in Passing Sidings 1.1 MB

Southern Pacific 2

1931	Protecting CTC Switches 2.9 MB
1931	Speed Control of Crossing Signals 586.7 KB

Springfield, IL 1

1931	Chicago & Illinois Midland Installs Electric Interlocking 2.5 MB

St. Charles Air Line 1

1931	One Electric Interlocking for Two Drawbridges 3.1 MB

St. Louis, MO 3

1931	A Lesson from a False-Clear Failure 572.9 KB
1931	New Interlocking for the St. Louis Municipal Bridge 2.9 MB
1931	Sand Causes Signal Failure 614.1 KB

St. Louis-San Francisco 1

1931	Efficiency Tests 1.9 MB

Stanley, OH 1

1931	Results of Centralized Control on NYC 703.8 KB

State Line, IN 1

1931	Centralized Traffic Control Installed on Wabash 5.6 MB

Terminal Railroad Association of St. Louis 2

1931	New Interlocking for the St. Louis Municipal Bridge 2.9 MB
1931	Sand Causes Signal Failure 614.1 KB

Toronto Terminals 1

1931	Interlocking System Installed at Toronto Union Station 4.6 MB

Toronto, Ontario 1

1931	Interlocking System Installed at Toronto Union Station 4.6 MB

Tower A, Omaha, NE 1

1931	Three Large Interlockings Installed by Union Pacific at Omaha 6.2 MB

Tower B, Omaha, NE 1

1931	Three Large Interlockings Installed by Union Pacific at Omaha 6.2 MB

Tower C, Omaha, NE 1

1931	Three Large Interlockings Installed by Union Pacific at Omaha 6.2 MB

Tower NY, IL 1

1931	Three-Track Signaling on 13.5 Miles of the C&NW 5.4 MB

track circuits 1

1931	The AC DC Track Circuit 1.5 MB

train control 2

1931	Automatic Train Control on Great Western of England 1.7 MB
1931	British Report on Automatic Train Control 2.6 MB

Trenton, NJ 1

1931	Signaling for Electrified Operation 3.5 MB

Trois Rivieres, Quebec 1

1931	Economy of Smaller Towers 539.7 KB

Type E signals 1

1931	Three-Track Signaling on 13.5 Miles of the C&NW 5.4 MB

Union Pacific 2

1931	Preparation of Signal Circuit Plans 2.0 MB
1931	Three Large Interlockings Installed by Union Pacific at Omaha 6.2 MB

Uxbridge, England 1

1931	Metropolitan Railway of London Resignaling with Modern Equipment 1.8 MB

Valley Park, MO 1

1931	Missouri Pacific Installs Centralized Traffic Control on 32 Miles of Double Track 2.7 MB

Wabash 4

1931	Centralized Traffic Control Installed on Wabash 5.6 MB
1931	Chicago & Illinois Midland Installs Electric Interlocking 2.5 MB
1931	Preparation of Signal Circuit Plans 2.0 MB
1931	Protecting CTC Switches 2.9 MB

West Nelson, IL 1

1931	Remotely-Controlled Interlocking Solves Problem on C&NW 1.9 MB

Western Pacific 1

1931	Efficiency Tests 1.9 MB

Windsor, Ontario 1

1931	Michigan Central Makes Extensive Improvements in Signaling System 3.3 MB

Winston, IL 1

1931	Chicago Great Western Saves $7,000 Annually by Remote Control of Tunnel Interlockings 3.7 MB

Zoo, Philadelphia, PA 2

1931	Pennsylvania Cuts Over Large Interlocking Plant Without Delaying Traffic 2.6 MB
1931	Signaling the Philadelphia Terminal of the Pennsylvania 8.9 MB

Railway Signaling: 1931

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