Railway Signaling: 1925

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.

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absolute permissive block signaling 1

1925	Comparison Between the APB System on Single Track and Overlap Circuits 654.1 KB

Alazon, NV 1

1925	Signaling of Paired Track Operation 1.3 MB

Albion, MI 1

1925	News of the Month (July 1925) 680.1 KB

Atchison, Topeka & Santa Fe 2

1925	Report on Economics of Signaling 606.1 KB
1925	The Train Control Situation 853.0 KB

Atlantic Coast Line 1

1925	The Train Control Situation 853.0 KB

Aurora, IL 1

1925	CB&Q Plant Has Novel Features 5.5 MB

automatic block signaling 1

1925	Signaling at the Age of Maturity 2.0 MB

automatic train stop 1

1925	Illinois Central ATS contract: News of the Month (July 1925) 700.0 KB

Baltimore & Ohio 3

1925	B&O Color-Position-Light Signals 3.7 MB
1925	Dispatching Trains by Signal Indication 968.0 KB
1925	Light Signals, Color, Position, or Color-Position 1.5 MB

Boston & Maine 1

1925	The Train Control Situation 853.0 KB

Branch Jct., IL 1

1925	Illinois Central ATS contract: News of the Month (July 1925) 700.0 KB

Brooklyn, NY 1

1925	Automatic Interlocking of a Double Track Junction on BMT Lines 1.8 MB

Brooklyn-Manhattan Transit 1

1925	Automatic Interlocking of a Double Track Junction on BMT Lines 1.8 MB

Burlington, IA 1

1925	CB&Q Controls Switches Remotely 3.7 MB

Cameron, PA 1

1925	Relieving Congestion by Signals 2.5 MB

Carpenter Street, Chicago, IL 1

1925	Maintenance on C&NW Terminals 12.5 MB

Champaign, IL 1

1925	Illinois Central ATS contract: News of the Month (July 1925) 700.0 KB

Chesapeake & Ohio 2

1925	Position Light Take Siding Signal in Combination With Semaphore Installed on C&O 675.6 KB
1925	The Train Control Situation 853.0 KB

Chicago & Alton 1

1925	The Train Control Situation 853.0 KB

Chicago & Eastern Illinois 2

1925	Division Train Control Installation on C&EI Approved by ICC 2.9 MB
1925	The Train Control Situation 853.0 KB

Chicago & North Western 6

1925	Approach Locking Circuit That Is Dependent Upon Signal Position 648.1 KB
1925	Color-Light Signals on C&NW 6.9 MB
1925	Enginemen Try to Force C&NW to Discontinue Left-Hand Operation- News of the Month (June 1925) 751.2 KB
1925	Maintenance on C&NW Terminals 12.5 MB
1925	Preliminary Report on C&NW Train Control 929.6 KB
1925	The Train Control Situation 853.0 KB

Chicago Heights, IL 1

1925	Division Train Control Installation on C&EI Approved by ICC 2.9 MB

Chicago Union Station 1

1925	Interlockings of New Chicago Station 7.8 MB

Chicago, Burlington & Quincy 5

1925	CB&Q Controls Switches Remotely 3.7 MB
1925	CB&Q Plant Has Novel Features 5.5 MB
1925	Excellent Results for 35 Years on Burlington 1.5 MB
1925	The Train Control Situation 853.0 KB
1925	Train Operation by Signal Indication on Burlington for 14 Years 679.2 KB

Chicago, IL 3

1925	Excellent Results for 35 Years on Burlington 1.5 MB
1925	Interlockings of New Chicago Station 7.8 MB
1925	Maintenance on C&NW Terminals 12.5 MB

Chicago, Indianapolis & Louisville 1

1925	The Train Control Situation 853.0 KB

Chicago, Milwaukee & St. Paul 1

1925	The Train Control Situation 853.0 KB

Cincinnati, New Orleans & Texas Pacific 1

1925	The Train Control Situation 853.0 KB

Clinton Street, Chicago, IL 1

1925	Maintenance on C&NW Terminals 12.5 MB

color position light signals 1

1925	B&O Color-Position-Light Signals 3.7 MB

Columbus, OH 1

1925	Traffic Reversal on Double Track by Signal Indication 1.5 MB

Council Bluffs, IA 1

1925	Preliminary Report on C&NW Train Control 929.6 KB

Crawford, WI 1

1925	CB&Q Controls Switches Remotely 3.7 MB

Danville, IL 1

1925	Division Train Control Installation on C&EI Approved by ICC 2.9 MB

Deepwater, WV 1

1925	Position Light Take Siding Signal in Combination With Semaphore Installed on C&O 675.6 KB

Delaware & Hudson 2

1925	Approach Locking Circuit That Is Dependent Upon Signal Position 648.1 KB
1925	The Train Control Situation 853.0 KB

Delaware, Lackawanna & Western 1

1925	Multiple Track Operation by Signal Indication 2.7 MB

Division Street, Chicago, IL 1

1925	Maintenance on C&NW Terminals 12.5 MB

Dolton, IL 1

1925	Division Train Control Installation on C&EI Approved by ICC 2.9 MB

Downers Grove, IL 1

1925	Excellent Results for 35 Years on Burlington 1.5 MB

Earlville, IL 1

1925	CB&Q Controls Switches Remotely 3.7 MB

East St. Louis, IL 1

1925	IC Markham contracts: News of the Month (June 1925) 579.3 KB

Eckley, CO 1

1925	Train Operation by Signal Indication on Burlington for 14 Years 679.2 KB

economics 1

1925	Report on Economics of Signaling 606.1 KB

electro-mechanical interlocking 1

1925	Inter-Control of Electric and Mechanical Functions at Interlocking Plants 1.6 MB

Elmhurst, IL 1

1925	Color-Light Signals on C&NW 6.9 MB

Erie 1

1925	Train Operation by Signal Indication 1.6 MB

Galveston, Harrisburg & San Antonio 1

1925	The Train Control Situation 853.0 KB

General Railway Signal 3

1925	Color-Light Signals on C&NW 6.9 MB
1925	IC Markham contracts: News of the Month (June 1925) 579.3 KB
1925	Signaling at the Age of Maturity 2.0 MB

Gilman, IL 1

1925	Signaling Two Tracks to Capacity 2.8 MB

Grand Central Terminal, New York, NY 1

1925	Duplex Signaling of Fourth Track Solves Grand Central Problem 1.1 MB

Great Northern 3

1925	Light Signals, Color, Position, or Color-Position 1.5 MB
1925	Report on Economics of Signaling 606.1 KB
1925	The Train Control Situation 853.0 KB

Hall dwarf signals 1

1925	Color-Light Signals on C&NW 6.9 MB

Hawthorne, IL 1

1925	Excellent Results for 35 Years on Burlington 1.5 MB

Hoboken, NJ 1

1925	Multiple Track Operation by Signal Indication 2.7 MB

Hoopeston, IL 1

1925	Division Train Control Installation on C&EI Approved by ICC 2.9 MB

Huntley, PA 1

1925	Relieving Congestion by Signals 2.5 MB

Illinois Central 5

1925	IC Markham contracts: News of the Month (June 1925) 579.3 KB
1925	Illinois Central ATS contract: News of the Month (July 1925) 700.0 KB
1925	Light Signals, Color, Position, or Color-Position 1.5 MB
1925	Signaling Two Tracks to Capacity 2.8 MB
1925	The Train Control Situation 853.0 KB

Indianola, NE 1

1925	Train Operation by Signal Indication on Burlington for 14 Years 679.2 KB

interlocking 2

1925	Maintenance on C&NW Terminals 12.5 MB
1925	Mechanical or Power Interlocking 814.7 KB

Jackson, MI 1

1925	News of the Month (July 1925) 680.1 KB

Kansas City Southern 1

1925	The Train Control Situation 853.0 KB

Lake Street, Chicago, IL 1

1925	Maintenance on C&NW Terminals 12.5 MB

Lehigh Valley 2

1925	Light Signals, Color, Position, or Color-Position 1.5 MB
1925	The Train Control Situation 853.0 KB

Lexington Avenue Line, Brooklyn, NY 1

1925	Automatic Interlocking of a Double Track Junction on BMT Lines 1.8 MB

lightning 1

1925	A Study of the Causes of Lightning 2.0 MB

Lima, OH 1

1925	PRR construction (Lima, et al): News of the Month (July 1925) 675.8 KB

Liverpool, IN 1

1925	PRR construction (Lima, et al): News of the Month (July 1925) 675.8 KB

LM Cabin, Columbus, OH 1

1925	Traffic Reversal on Double Track by Signal Indication 1.5 MB

Louisville & Nashville 1

1925	The Train Control Situation 853.0 KB

maintenance 1

1925	Maintenance on C&NW Terminals 12.5 MB

Markham Yard, IL 1

1925	IC Markham contracts: News of the Month (June 1925) 579.3 KB

McCook, NE 1

1925	Train Operation by Signal Indication on Burlington for 14 Years 679.2 KB

Mendota, IL 1

1925	CB&Q Controls Switches Remotely 3.7 MB

Michigan Central 2

1925	News of the Month (July 1925) 680.1 KB
1925	The Train Control Situation 853.0 KB

Millbrook, OH 1

1925	PRR construction (Lima, et al): News of the Month (July 1925) 675.8 KB

Millburn, NJ 1

1925	Multiple Track Operation by Signal Indication 2.7 MB

Missouri Pacific 1

1925	The Train Control Situation 853.0 KB

Missouri Valley, IA 1

1925	Preliminary Report on C&NW Train Control 929.6 KB

Missouri-Kansas-Texas 1

1925	Marker Lights on Single Track Automatic Signals 684.0 KB

Momence, IL 1

1925	Division Train Control Installation on C&EI Approved by ICC 2.9 MB

Monon 1

1925	The Train Control Situation 853.0 KB

Myrtle Avenue Line, Brooklyn, NY 1

1925	Automatic Interlocking of a Double Track Junction on BMT Lines 1.8 MB

Nashville, Chattanooga & St. Louis 1

1925	Marker Lights on Single Track Automatic Signals 684.0 KB

New York Central 4

1925	Duplex Signaling of Fourth Track Solves Grand Central Problem 1.1 MB
1925	Light Signals, Color, Position, or Color-Position 1.5 MB
1925	Signals and the Saving of Fuel 2.4 MB
1925	The Train Control Situation 853.0 KB

New York, New Haven & Hartford 2

1925	Duplex Signaling of Fourth Track Solves Grand Central Problem 1.1 MB
1925	The Train Control Situation 853.0 KB

New York, NY 2

1925	Automatic Interlocking of a Double Track Junction on BMT Lines 1.8 MB
1925	Duplex Signaling of Fourth Track Solves Grand Central Problem 1.1 MB

Noble Street, Chicago, IL 1

1925	Maintenance on C&NW Terminals 12.5 MB

Norfolk & Western 2

1925	Light Signals, Color, Position, or Color-Position 1.5 MB
1925	The Train Control Situation 853.0 KB

Northern Pacific 3

1925	A. H. Rudd Discusses Train Control at Philadelphia Engineers' Club 2.8 MB
1925	Comparison Between the APB System on Single Track and Overlap Circuits 654.1 KB
1925	The Train Control Situation 853.0 KB

Oregon-Washington Railroad & Navigation 1

1925	The Train Control Situation 853.0 KB

Otto, IL 1

1925	Signaling Two Tracks to Capacity 2.8 MB

Oxford, NE 1

1925	CB&Q Controls Switches Remotely 3.7 MB

Pennsylvania 9

1925	A movement was begun 604.7 KB
1925	A. H. Rudd Discusses Train Control at Philadelphia Engineers' Club 2.8 MB
1925	Light Signals, Color, Position, or Color-Position 1.5 MB
1925	PRR construction (Lima, et al): News of the Month (July 1925) 675.8 KB
1925	Relieving Congestion by Signals 2.5 MB
1925	The Position Light Signal 1.7 MB
1925	The Train Control Situation 853.0 KB
1925	Train Operation by Signal Indications – Especially by Cab Signals 1.3 MB
1925	W. M. Post: News of the Month (July 1925) 775.5 KB

personal 1

1925	W. M. Post: News of the Month (July 1925) 775.5 KB

Phinney, R. M. 1

1925	Color-Light Signals on C&NW 6.9 MB

Pittsburgh & Lake Erie 1

1925	The Train Control Situation 853.0 KB

Post, W. M. 1

1925	W. M. Post: News of the Month (July 1925) 775.5 KB

Reading 2

1925	Approach Locking Circuits Dependent on Signal Position 1.4 MB
1925	The Train Control Situation 853.0 KB

reserve yellow 1

1925	Color-Light Signals on C&NW 6.9 MB

Rudd, A. H. 4

1925	A movement was begun 604.7 KB
1925	A. H. Rudd Discusses Train Control at Philadelphia Engineers' Club 2.8 MB
1925	The Position Light Signal 1.7 MB
1925	Train Operation by Signal Indications – Especially by Cab Signals 1.3 MB

Southern Pacific 2

1925	Signaling of Paired Track Operation 1.3 MB
1925	The Train Control Situation 853.0 KB

St. Louis-San Francisco 1

1925	The Train Control Situation 853.0 KB

Sunbury, PA 1

1925	Train Operation by Signal Indications – Especially by Cab Signals 1.3 MB

Swanson, W. W. 1

1925	Train Operation by Signal Indication on Burlington for 14 Years 679.2 KB

Toledo & Ohio Central 1

1925	Traffic Reversal on Double Track by Signal Indication 1.5 MB

train control 9

1925	A. H. Rudd Discusses Train Control at Philadelphia Engineers' Club 2.8 MB
1925	Division Train Control Installation on C&EI Approved by ICC 2.9 MB
1925	Final Train Control Order Issued by ICC 4.1 MB
1925	News of the Month (July 1925) 680.1 KB
1925	Preliminary Report on C&NW Train Control 929.6 KB
1925	Reports of Three Interim Inspections 1.4 MB
1925	The Train Control Situation 853.0 KB
1925	Train Control Inspection Reports 1.7 MB
1925	Train Control Progress in 1924 3.8 MB

train orders 2

1925	Eliminating the Written Train Order 2.8 MB
1925	Signaling at the Age of Maturity 2.0 MB

Tuscola, IL 1

1925	Illinois Central ATS contract: News of the Month (July 1925) 700.0 KB

Type E signals 1

1925	Color-Light Signals on C&NW 6.9 MB

Union Switch & Signal 5

1925	Eliminating the Written Train Order 2.8 MB
1925	IC Markham contracts: News of the Month (June 1925) 579.3 KB
1925	Illinois Central ATS contract: News of the Month (July 1925) 700.0 KB
1925	Inter-Control of Electric and Mechanical Functions at Interlocking Plants 1.6 MB
1925	PRR construction (Lima, et al): News of the Month (July 1925) 675.8 KB

Wanatah, IN 1

1925	PRR construction (Lima, et al): News of the Month (July 1925) 675.8 KB

Watseka, IL 1

1925	Division Train Control Installation on C&EI Approved by ICC 2.9 MB

Weso, NV 1

1925	Signaling of Paired Track Operation 1.3 MB

West Burlington, IA 1

1925	Excellent Results for 35 Years on Burlington 1.5 MB

West Chicago, IL 1

1925	Color-Light Signals on C&NW 6.9 MB

West End, NJ 1

1925	Multiple Track Operation by Signal Indication 2.7 MB

Wight, S. N. 2

1925	Signaling at the Age of Maturity 2.0 MB
1925	Train Operation by Signal Indication on Burlington for 14 Years 679.2 KB

Williamsport, PA 1

1925	Train Operation by Signal Indications – Especially by Cab Signals 1.3 MB

Wray, CO 1

1925	Train Operation by Signal Indication on Burlington for 14 Years 679.2 KB

Railway Signaling: 1925

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