Railway Signaling: 1941

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.

15th Street, Chicago, IL 1

1941	Two New Interlockings on the C&WI 5.1 MB

16th Street (C&WI), Chicago, IL 1

1941	Two New Interlockings on the C&WI 5.1 MB

1941 1

1941	1941 index 3.7 MB

55th Street, Chicago, IL 1

1941	Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt 6.9 MB

absolute permissive block signaling 2

1941	Automatic Signaling and Tunnel Protection On the Denver & Salt Lake 6.7 MB
1941	Simplified Signaling 426.9 KB

accident 1

1941	Accident at Interlocking 1.3 MB

all-relay interlocking 2

1941	All-Relay Signal System Installed on Terminal Railroad of St. Louis 1.2 MB
1941	Southern Pacific Installs Interlocking at Drawbridge 6.3 MB

Alton 2

1941	Electric Locking With No Derails 735.7 KB
1941	Interlocking and Automatic Signals on the Alton 3.0 MB

Alton, IL 1

1941	Interlocking and Automatic Signals on the Alton 3.0 MB

Atchison, Topeka & Santa Fe 3

1941	Carrier Communication Equipment Installed on the Santa Fe 4.7 MB
1941	Non-Stop Permissive Signals 1.4 MB
1941	Railway Exhibit Presented to Museum of Science and Industry 636.5 KB

automatic block signaling 10

1941	A Review of 1940 and Prospects for the Future 1.3 MB
1941	A Simplified Signaling Arrangement For the Direction of Trains by Signal Indications 5.5 MB
1941	Automatic Block and Centralized Traffic Control on the Chesapeake & Ohio 4.3 MB
1941	Automatic Signaling and Tunnel Protection On the Denver & Salt Lake 6.7 MB
1941	Automatics Installed on North Shore 1.6 MB
1941	Flashing Yellow as a Fourth Aspect on the IC 2.6 MB
1941	Monon Changes Approved 760.8 KB
1941	Non-Stop Permissive Signals 2.8 MB
1941	Non-Stop Permissive Signals 1.4 MB
1941	Rule 204 1.7 MB

automatic block signals 1

1941	Field Circuits For Simplified Semi-Automatic Signaling 3.6 MB

automatic interlocking 2

1941	DT&I Installs Automatic Interlocking 5.0 MB
1941	Loss of Shunt 912.3 KB

Baldwin, LA 1

1941	Southern Pacific Installs Interlocking at Drawbridge 6.3 MB

Baltimore & Ohio 1

1941	Accident at Interlocking 1.3 MB

Barboursville, WV 1

1941	Automatic Block and Centralized Traffic Control on the Chesapeake & Ohio 4.3 MB

Belt Jct., Chicago, IL 1

1941	Belt Railway of Chicago Installs Interlocking 12.3 MB

Belt Jct., Indianapolis, IN 1

1941	Monon Changes Approved 760.8 KB

Belt Railway of Chicago 2

1941	Belt Railway of Chicago Installs Interlocking 12.3 MB
1941	Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt 6.9 MB

Bloomington, IN 1

1941	Monon Changes Approved 760.8 KB

Borden, IN 1

1941	Monon Changes Approved 760.8 KB

braking distance 1

1941	Rule 204 1.7 MB

Carbon Cliff, IL 1

1941	Protection at 38 Street Crossings In and Near Rock Island, Ill 3.1 MB

carrier communication 1

1941	Carrier Communication Equipment Installed on the Santa Fe 4.7 MB

Central of New Jersey 1

1941	Non-Stop Permissive Signals 2.8 MB

centralized traffic control 9

1941	A Review of 1940 and Prospects for the Future 1.3 MB
1941	Automatic Block and Centralized Traffic Control on the Chesapeake & Ohio 4.3 MB
1941	Automatic Signaling and Tunnel Protection On the Denver & Salt Lake 6.7 MB
1941	Centralized Traffic Control Installed on the Missouri Pacific 3.7 MB
1941	Centralized Traffic Control On the Chesapeake & Ohio 7.1 MB
1941	CTC Installed on Norfolk & Western 5.1 MB
1941	Protection at Hand-Thrown Switches in CTC Territory 1.6 MB
1941	Railway Exhibit Presented to Museum of Science and Industry 636.5 KB
1941	Simplified Signaling 426.9 KB

Chesapeake & Ohio 2

1941	Automatic Block and Centralized Traffic Control on the Chesapeake & Ohio 4.3 MB
1941	Centralized Traffic Control On the Chesapeake & Ohio 7.1 MB

Chicago & North Western 1

1941	Non-Stop Permissive Signals 2.8 MB

Chicago & Western Indiana 3

1941	Belt Railway of Chicago Installs Interlocking 12.3 MB
1941	Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt 6.9 MB
1941	Two New Interlockings on the C&WI 5.1 MB

Chicago North Shore & Milwaukee 1

1941	Automatics Installed on North Shore 1.6 MB

Chicago Rapid Transit 1

1941	Splicing a Submarine Cable 4.6 MB

Chicago, Burlington & Quincy 1

1941	Protection at 38 Street Crossings In and Near Rock Island, Ill 3.1 MB

Chicago, IL 7

1941	Belt Railway of Chicago Installs Interlocking 12.3 MB
1941	Flashing Yellow as a Fourth Aspect on the IC 2.6 MB
1941	Illinois Central Uses Automatic Telephone System on Chicago Terminal Area 5.8 MB
1941	Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt 6.9 MB
1941	Railway Exhibit Presented to Museum of Science and Industry 636.5 KB
1941	Splicing a Submarine Cable 4.6 MB
1941	Two New Interlockings on the C&WI 5.1 MB

Chicago, Indianapolis & Louisville 2

1941	A Review of 1940 and Prospects for the Future 1.3 MB
1941	Monon Changes Approved 760.8 KB

Chicago, Milwaukee, St. Paul & Pacific 1

1941	Protection at 38 Street Crossings In and Near Rock Island, Ill 3.1 MB

Chicago, Rock Island & Pacific 1

1941	Protection at 38 Street Crossings In and Near Rock Island, Ill 3.1 MB

Clagg, KY 1

1941	Pennsylvania Installs CTC at Louisville, KY 4.9 MB

code-following track relay 1

1941	P4 Code-Following Relay 1.1 MB

coded track circuits 1

1941	Code-Following Polar Track Circuit Relay 1.4 MB

Cole, MO 1

1941	Centralized Traffic Control Installed on the Missouri Pacific 3.7 MB

communication 1

1941	Carrier Communication Equipment Installed on the Santa Fe 4.7 MB

Davenport, Rock Island & Northwestern 1

1941	Protection at 38 Street Crossings In and Near Rock Island, Ill 3.1 MB

Delta, MO 1

1941	Signaling on 47 Miles of St. Louis Southwestern 12.6 MB

Denver & Salt Lake 2

1941	Automatic Signaling and Tunnel Protection On the Denver & Salt Lake 6.7 MB
1941	Non-Stop Permissive Signals 1.4 MB

Denver, CO 1

1941	Automatic Signaling and Tunnel Protection On the Denver & Salt Lake 6.7 MB

Detroit, Toledo & Ironton 1

1941	DT&I Installs Automatic Interlocking 5.0 MB

Dexter Jct., MO 1

1941	Signaling on 47 Miles of St. Louis Southwestern 12.6 MB

drawbridge 1

1941	Southern Pacific Installs Interlocking at Drawbridge 6.3 MB

East Moline, IL 1

1941	Protection at 38 Street Crossings In and Near Rock Island, Ill 3.1 MB

East Portal, CO 1

1941	Automatic Signaling and Tunnel Protection On the Denver & Salt Lake 6.7 MB

electric interlocking 1

1941	Belt Railway of Chicago Installs Interlocking 12.3 MB

electro-pneumatic interlocking 1

1941	Two New Interlockings on the C&WI 5.1 MB

Fairmount, IL 1

1941	Automatics Installed on the Wabash 4.0 MB

Fogg, IN 1

1941	Monon Changes Approved 760.8 KB

Forest, VA 1

1941	CTC Installed on Norfolk & Western 5.1 MB

Frank Rhea 1

1941	Frank Rhea (obituary) 1.0 MB

Gault, P. M. 1

1941	P. M. Gault obituary 1.2 MB

gauntlet track 1

1941	Automatics Installed on North Shore 1.6 MB

Glencoe, IL 1

1941	Automatics Installed on North Shore 1.6 MB

Godfrey, IL 1

1941	Interlocking and Automatic Signals on the Alton 3.0 MB

Gordonsville, VA 1

1941	Centralized Traffic Control On the Chesapeake & Ohio 7.1 MB

grade signals 1

1941	Non-Stop Permissive Signals 1.4 MB

Great Britain 1

1941	War on the British Railways 986.3 KB

ground tester 1

1941	Ground Tester 704.0 KB

Hammond, IN 1

1941	Monon Changes Approved 760.8 KB

highway crossings 1

1941	Protection at 38 Street Crossings In and Near Rock Island, Ill 3.1 MB

Homer, IL 1

1941	Automatics Installed on the Wabash 4.0 MB

Illinois Central 5

1941	Accident at Interlocking 1.3 MB
1941	Flashing Yellow as a Fourth Aspect on the IC 2.6 MB
1941	Illinois Central Uses Automatic Telephone System on Chicago Terminal Area 5.8 MB
1941	Non-Stop Permissive Signals 2.8 MB
1941	P. M. Gault obituary 1.2 MB

Illmo, MO 1

1941	Signaling on 47 Miles of St. Louis Southwestern 12.6 MB

index 1

1941	1941 index 3.7 MB

Indian Hill, IL 1

1941	Automatics Installed on North Shore 1.6 MB

Indiana Harbor Belt 1

1941	Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt 6.9 MB

interlocking 10

1941	A Review of 1940 and Prospects for the Future 1.3 MB
1941	All-Relay Signal System Installed on Terminal Railroad of St. Louis 1.2 MB
1941	Belt Railway of Chicago Installs Interlocking 12.3 MB
1941	Electric Locking With No Derails 735.7 KB
1941	Loss of Shunt 912.3 KB
1941	Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt 6.9 MB
1941	Remote Control Installation 2.4 MB
1941	Southern Pacific Installs Interlocking at Drawbridge 6.3 MB
1941	Track Model Lamps 429.7 KB
1941	Two New Interlockings on the C&WI 5.1 MB

Interstate Commerce Commission 6

1941	A Simplified Signaling Arrangement For the Direction of Trains by Signal Indications 5.5 MB
1941	ICC Manual Block Regulations 518.5 KB
1941	Monon Changes Approved 760.8 KB
1941	Non-Stop Permissive Signals 1.4 MB
1941	Rule 204 1.7 MB
1941	Simplified Signaling 426.9 KB

Lafayette Jct., IN 1

1941	Monon Changes Approved 760.8 KB

Lafayette, IN 1

1941	Monon Changes Approved 760.8 KB

Lindsay, VA 1

1941	Centralized Traffic Control On the Chesapeake & Ohio 7.1 MB

Louisville & Nashville 1

1941	Non-Stop Permissive Signals 1.4 MB

Louisville, KY 1

1941	Pennsylvania Installs CTC at Louisville, KY 4.9 MB

Lynchburg, VA 1

1941	CTC Installed on Norfolk & Western 5.1 MB

manual block signaling 1

1941	ICC Manual Block Regulations 518.5 KB

Markham Yard, IL 1

1941	Illinois Central Uses Automatic Telephone System on Chicago Terminal Area 5.8 MB

Matteson, IL 1

1941	Flashing Yellow as a Fourth Aspect on the IC 2.6 MB

May Street, St. Louis, MO 1

1941	All-Relay Signal System Installed on Terminal Railroad of St. Louis 1.2 MB

Michigan Central 1

1941	Track Model Lamps 429.7 KB

Minneapolis, St. Paul & Sault Ste. Marie 1

1941	Remote Control Installation 2.4 MB

Missouri Pacific 3

1941	Centralized Traffic Control Installed on the Missouri Pacific 3.7 MB
1941	Non-Stop Permissive Signals 1.4 MB
1941	P. M. Gault obituary 1.2 MB

model boards 1

1941	Track Model Lamps 429.7 KB

model railroad 1

1941	Railway Exhibit Presented to Museum of Science and Industry 636.5 KB

Moffat Tunnel 1

1941	Automatic Signaling and Tunnel Protection On the Denver & Salt Lake 6.7 MB

Moline, IL 1

1941	Protection at 38 Street Crossings In and Near Rock Island, Ill 3.1 MB

Monon 1

1941	Monon Changes Approved 760.8 KB

Monon, IN 1

1941	Monon Changes Approved 760.8 KB

Morris, OH 1

1941	DT&I Installs Automatic Interlocking 5.0 MB

Museum of Science & Industry, Chicago, IL 1

1941	Railway Exhibit Presented to Museum of Science and Industry 636.5 KB

New York Central 2

1941	Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt 6.9 MB
1941	Simplified Signaling 426.9 KB

New York, Chicago & St. Louis 1

1941	DT&I Installs Automatic Interlocking 5.0 MB

Norfolk & Western 1

1941	CTC Installed on Norfolk & Western 5.1 MB

North Fond du Lac, WI 1

1941	Remote Control Installation 2.4 MB

NX interlocking 1

1941	Modern Entrance-Exit Interlocking Replaces Mechanical Plant On Indiana Harbor Belt 6.9 MB

obituary 1

1941	P. M. Gault obituary 1.2 MB

Odin, IL 1

1941	Accident at Interlocking 1.3 MB

Orleans, IN 1

1941	Monon Changes Approved 760.8 KB

Osage, MO 1

1941	Centralized Traffic Control Installed on the Missouri Pacific 3.7 MB

Peach Creek, WV 1

1941	Automatic Block and Centralized Traffic Control on the Chesapeake & Ohio 4.3 MB

Pennsylvania 5

1941	Frank Rhea (obituary) 1.0 MB
1941	Non-Stop Permissive Signals 2.8 MB
1941	P. M. Gault obituary 1.2 MB
1941	Pennsylvania Installs CTC at Louisville, KY 4.9 MB
1941	Protection at Hand-Thrown Switches in CTC Territory 1.6 MB

permissive signals 1

1941	Non-Stop Permissive Signals 2.8 MB

personal 1

1941	P. M. Gault obituary 1.2 MB

Philo, IL 1

1941	Automatics Installed on the Wabash 4.0 MB

Phoebe, VA 1

1941	CTC Installed on Norfolk & Western 5.1 MB

pneumatic interlocking 1

1941	Two New Interlockings on the C&WI 5.1 MB

relay 2

1941	Code-Following Polar Track Circuit Relay 1.4 MB
1941	P4 Code-Following Relay 1.1 MB

remote control 1

1941	Remote Control Installation 2.4 MB

Rock Island, IL 1

1941	Protection at 38 Street Crossings In and Near Rock Island, Ill 3.1 MB

Ryan, IL 1

1941	Automatics Installed on the Wabash 4.0 MB

Schwendt, B. J. 1

1941	Simplified Signaling 426.9 KB

Sidney, IL 1

1941	Automatics Installed on the Wabash 4.0 MB

Soo Line 1

1941	Remote Control Installation 2.4 MB

Southern 1

1941	Non-Stop Permissive Signals 1.4 MB

Southern Pacific 1

1941	Southern Pacific Installs Interlocking at Drawbridge 6.3 MB

St. Louis Southwestern 1

1941	Signaling on 47 Miles of St. Louis Southwestern 12.6 MB

St. Louis, MO 2

1941	All-Relay Signal System Installed on Terminal Railroad of St. Louis 1.2 MB
1941	Interlocking Restored to Service At St. Louis Union Station 3.6 MB

Style CDP relay 1

1941	Code-Following Polar Track Circuit Relay 1.4 MB

Style P4 relay 1

1941	P4 Code-Following Relay 1.1 MB

switch locks 1

1941	Protection at Hand-Thrown Switches in CTC Territory 1.6 MB

switch protection 1

1941	Protection at Hand-Thrown Switches in CTC Territory 1.6 MB

telephones 1

1941	Illinois Central Uses Automatic Telephone System on Chicago Terminal Area 5.8 MB

Terminal Railroad Association of St. Louis 2

1941	All-Relay Signal System Installed on Terminal Railroad of St. Louis 1.2 MB
1941	Interlocking Restored to Service At St. Louis Union Station 3.6 MB

Terre Haute, IN 1

1941	Protection at Hand-Thrown Switches in CTC Territory 1.6 MB

Tilton, IL 1

1941	Automatics Installed on the Wabash 4.0 MB

timetable and train order 1

1941	A Simplified Signaling Arrangement For the Direction of Trains by Signal Indications 5.5 MB

Tolono, IL 1

1941	Automatics Installed on the Wabash 4.0 MB

Topeka, KS 1

1941	Carrier Communication Equipment Installed on the Santa Fe 4.7 MB

Union Pacific 1

1941	Non-Stop Permissive Signals 1.4 MB

Union Switch & Signal 4

1941	Belt Railway of Chicago Installs Interlocking 12.3 MB
1941	Code-Following Polar Track Circuit Relay 1.4 MB
1941	Loss of Shunt 912.3 KB
1941	P4 Code-Following Relay 1.1 MB

Wabash 3

1941	All-Relay Signal System Installed on Terminal Railroad of St. Louis 1.2 MB
1941	Automatics Installed on the Wabash 4.0 MB
1941	Belt Railway of Chicago Installs Interlocking 12.3 MB

Wann, IL 1

1941	Interlocking and Automatic Signals on the Alton 3.0 MB

Watertown, IL 1

1941	Protection at 38 Street Crossings In and Near Rock Island, Ill 3.1 MB

Winnetka, IL 1

1941	Automatics Installed on North Shore 1.6 MB

World War II 1

1941	War on the British Railways 986.3 KB

Zuni, CO 1

1941	Automatic Signaling and Tunnel Protection On the Denver & Salt Lake 6.7 MB

Railway Signaling: 1941

Browse articles by keyword:

Browse articles by year: