Railway Signaling | F

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.

"FG", Louisville, KY 1

1949	New Interlocking in Louisville 5.3 MB

"FS" interlocking, Elmira, NY 1

1958	DL&W-Erie joint operation is ready to go 643.6 KB

facing point locks 6

1959	B&M takes up track and installs traffic control, gates and flashers 735.7 KB
1940	Facing Point Lock for Spring Switches 1.2 MB
1940	Facing Point Locks On Main Line Switches 2.6 MB
1935	Facing Point Locks on Switches 3.2 MB
1935	FPL Adjustment on Spring Switches 1.3 MB
1957	What's the Answer: Spring switches? 200.0 KB

fail-safe circuits 1

1963	Solid State Devices 938.4 KB

Fair Grounds, IA 1

1911	Automatic Signals on the Chicago Great Western 7.4 MB

Fairhope, OH 1

1962	News briefs. 1962-02 1.4 MB

Fairmount, IL 1

1941	Automatics Installed on the Wabash 4.0 MB

Fairpoint, OH 1

1934	CTC Installed on the Baltimore & Ohio 2.1 MB

Falk, MO 1

1959	Burlington installs modified CTC 1.0 MB

Fall, VA 1

1963	News briefs. 1963-05 720.2 KB

Falls City, NE 1

1963	News briefs. 1963-11 1.4 MB

false proceed failures 15

1931	A Lesson from a False-Clear Failure 577.9 KB
1965	Collision due to signal failure 648.5 KB
1959	Decrease in signal failures 336.5 KB
1958	Decrease in signal failures reported by ICC Bureau of Safety 629.9 KB
1937	False Clear Failures 2.0 MB
1947	False Clear Signal 1.0 MB
1955	Fewer signal failures 654.7 KB
1951	ICC Bureau of Safety Report 740.4 KB
1961	ICC Reports on Railroad Safety 194.7 KB
1963	ICC Reports on Signaling 959.4 KB
1964	ICC Reports on Signaling 954.4 KB
1960	ICC Reports RR safety 554.4 KB
1957	Increase in signal failures reported by ICC Bureau of Safety 652.1 KB
1965	Indication locking inadequate says ICC in report 849.9 KB
1965	Signal failures reported by ICC 1.1 MB

false restrictive failures 8

1959	Decrease in signal failures 336.5 KB
1958	Decrease in signal failures reported by ICC Bureau of Safety 629.9 KB
1955	Fewer signal failures 654.7 KB
1951	ICC Bureau of Safety Report 740.4 KB
1963	ICC Reports on Signaling 959.4 KB
1960	ICC Reports RR safety 554.4 KB
1957	Increase in signal failures reported by ICC Bureau of Safety 652.1 KB
1965	Signal failures reported by ICC 1.1 MB

Fargo, ND 1

1922	News of the Month. 1922-04 613.8 KB

Farnam, IA 1

1947	ICC Signal Hearings 179.7 KB

Farrington, IL 1

1940	Pennsylvania Installs Centralized Traffic Control On 69 Miles of Line 13.1 MB

Farrington, WA 1

1947	Signals and Slide Fences on the Spokane, Portland & Seattle 1.8 MB

Fayetteville, NC 1

1961	News briefs. 1961-12 978.0 KB

Featherstone, VA 1

1955	How to run reverse temporarily 197.6 KB

Federal Communications Commission 1

1958	Split-channel radio 649.4 KB

federal highway improvement program 1

1935	Highway-Railroad Crossing Signals Installed at Federal Expense 1.2 MB

Federal Railway Signal 1

1954	General Railway Signal Company Enters Fiftieth Year 1.6 MB

federal regulation 1

1937	Signal Inspection Bill Passed by Congress 3.4 MB

Federal Signal 12

1916	AC Signaling in the Centre Street Loop 924.9 KB
1920	Electric Interlocking at Bellefontaine, Ohio 3.8 MB
1910	Electric Interlocking at Griffith, Indiana 964.1 KB
1915	General Railway Signal Company and Federal Signal Company Consolidated 986.1 KB
1915	New Interlockers on the Flint Belt Line 2.2 MB
1922	News of the Month. 1922-06 516.2 KB
1922	News of the Month. 1922-07 346.9 KB
1922	News of the Month. 1922-08 394.0 KB
1922	News of the Month. 1922-09 562.2 KB
1922	News of the Month. 1922-10 368.4 KB
1922	News of the Month. 1922-12 388.1 KB
1916	Service Record of Position-Light Signals 580.8 KB

Federal Signal Co. 1

1918	New Electric Interlocking at Clyde, IL 418.7 KB

Federico Lacroze terminal, Buenos Aires, Argentina 1

1960	News briefs. 1960-06 1.2 MB

Fennville, MI 1

1945	CTC Solves Operating Problems On the Pere Marquette 4.3 MB

Ferguson, MO 2

1940	New Signaling on the Wabash 8.1 MB
1937	Signaling on the Wabash 3.7 MB

Fifth Street interlocking, Elmira, NY 1

1958	DL&W-Erie joint operation is ready to go 643.6 KB

Filer, PA 2

1957	Bessemer takes up second track and installs Centralized Traffic Control 706.4 KB
1943	CTC on the Bessemer & Lake Erie 8.7 MB

Finch, NY 1

1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

Finlen, MT 1

1916	Signaling the Milwaukee's Electric Zone 624.8 KB

Finley, WA 1

1947	Signals and Slide Fences on the Spokane, Portland & Seattle 1.8 MB

fire 4

1940	Fire Destroys Tower of Large Interlocking at St. Louis 2.0 MB
1921	Fire Threatened Tie Up At Grand Central Terminal 1.5 MB
1923	Quick Restoration of Wire Service at Broad Street Station 3.5 MB
1940	St. Louis Terminal 403.1 KB

fire detectors 2

1959	Fewer wayside observers makes automatic hazard detection necessary 1.1 MB
1939	Special Aspects for Detectors 937.0 KB

Fishers, PA 1

1931	Re-Signaling of the Reading Electrified Territory 778.0 KB

five-aspect signals 1

1944	New York Central Installs Coded Track Circuits 3.9 MB

Flag Center, IL 3

1930	Burlington Installs Centralized Control on Nine Miles of Double Track 1.8 MB
1943	Centralized Traffic Control Installed on 39 Miles of the Burlington 6.1 MB
1947	More CTC on the Burlington 2.0 MB

flagging 1

1940	Entering the Main Line 1.3 MB

flasher relay 3

1939	An Improved Flasher Relay 1.8 MB
1940	Flasher Relay 1.7 MB
1947	Flasher Relay 1.3 MB

flashing aspects 3

1935	Flashing Aspects 1.3 MB
1935	Multiple Aspect Signaling 3.3 MB
1949	Varied Light Intensity 921.0 KB

flashing light crossing signals 1

1943	Crossing Protection on Milwaukee 5.7 MB

flashing light signals 8

1951	A History of Flashing-Light Crossing Signals- What They Are and Why 570.5 KB
1935	Crossing Bells at Flasher Signals 1.9 MB
1965	Crossing protection gets new look 490.1 KB
1959	D&H upgrades crossing protection 626.4 KB
1917	Flash Lights on the P&R 915.6 KB
1935	Letter to the Editor: Highways vs. Railroads 1.7 MB
1936	Phantom Indications 1.8 MB
1936	Reducing Current at Flashing Relay Contacts 2.2 MB

flashing red aspect 1

1949	Train Operation By Signal Inidication Used Extensively on the Nickel Plate 6.1 MB

flashing signals 1

1913	The AGA flashlight a success in Sweden 331.0 KB

Flat Rock, KY 1

1955	Much is new in signaling for 1955 826.7 KB

Flat Rock, MI 2

1959	AFO circuits protect crossing 554.0 KB
1946	DT&I Tests Radio 4.3 MB

Flatbush Ave., New York, NY 1

1922	News of the Month. 1922-06 516.2 KB

Flint Belt 3

1915	New Interlockers on the Flint Belt Line 2.2 MB
1923	New Interlockers on the Flint Belt Line 1.6 MB
1922	News of the Month. 1922-09 562.2 KB

Flint, MI 4

1958	C&O Has Good Ideas in CTC 2.5 MB
1915	New Interlockers on the Flint Belt Line 2.2 MB
1923	New Interlockers on the Flint Belt Line 1.6 MB
1922	News of the Month. 1922-09 562.2 KB

Flinton, IL 2

1954	CTC Increases Capacity of Double Track 4.2 MB
1938	CTC on the Missouri Pacific 5.3 MB

Flomaton, AL 1

1962	News briefs. 1962-05 826.8 KB

flood detectors 4

1959	Fewer wayside observers makes automatic hazard detection necessary 1.1 MB
1950	Flood Detectors on the Katy 2.7 MB
1949	New Automatic Block on the Katy 4.7 MB
1958	RS&C 50th anniversary: Railroad communications ... from Morse to microwave 3.3 MB

flood protection 1

1947	CTC Down by the Ohio 2.7 MB

flooding 7

1936	Boston & Maine Flooded Signaling Rehabilitated 8.3 MB
1936	Flood Damage to Signaling 5.0 MB
1918	Maintaining an Interlocking Plant at High Tide 241.8 KB
1937	Ohio Flood Damages Signaling 9.7 MB
1936	Railroads Clean Up After Flood Waters 33.3 MB
1937	Rectifiers in Flood Waters 972.4 KB
1937	Rehabilitating Flooded Signaling 1.4 MB

Floral Park, NY 1

1952	Speed Control Installed on the Long Island 1.3 MB

Florence, Italy 1

1947	Signaling and Interlocking in Italy 684.8 KB

Florence, SC 3

1963	News briefs. 1963-01 951.3 KB
1964	News briefs. 1964-05 1.0 MB
1964	News briefs. 1964-10 768.6 KB

Florida East Coast 19

1935	Accident at Drawbridge 1.4 MB
1932	Crossing Problem 2.6 MB
1930	Directional Approach Lighting 449.8 KB
1932	False Change of Lineup 850.0 KB
1921	New Interlockings at Jacksonville Terminal 3.4 MB
1960	News briefs. 1960-08 603.8 KB
1962	News briefs. 1962-02 1.4 MB
1962	News briefs. 1962-09 838.3 KB
1963	News briefs. 1963-11 1.4 MB
1964	News briefs. 1964-07 833.0 KB
1964	News briefs. 1964-08 811.5 KB
1964	News briefs. 1964-12 981.5 KB
1965	News briefs. 1965-07 788.3 KB
1965	News briefs. 1965-10 1.1 MB
1927	Should Track Circuit Polarities be Staggered? 1.5 MB
1935	Signaling for Higher Train Speeds 3.0 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1930	What Protection at Drawbridges? 3.5 MB
1960	What’s the answer? Automatic OS 354.1 KB

flow charts 1

1961	Digital Computer Simulates CTC Dispatcher 2.8 MB

FN-16 flasher relay 2

1939	An Improved Flasher Relay 1.8 MB
1937	New Devices- March 1937 18.1 MB

FN-16A relay 1

1947	Flasher Relay 1.3 MB

Fogg, IN 1

1941	Monon Changes Approved 760.8 KB

Foleyet, Ontario 2

1953	Canadian National Adapts CTC to Traffic of 12 Trains Daily 7.5 MB
1959	Pushbutton console for CTC 785.3 KB

Folsom Place, WI 1

1935	New Signaling on the Route of the C&NW "400" 9.6 MB

Fond du Lac, WI 2

1964	News briefs. 1964-02 992.4 KB
1965	News briefs. 1965-05 1.4 MB

Fonda, NY 1

1958	RS&C 50th anniversary: Railroad communications ... from Morse to microwave 3.3 MB

forced-drop lever locks 1

1936	Lost Motion in Locking 3.0 MB

Ford Street, Chicago, IL 1

1924	New Interlocking Construction Ideas 3.4 MB

Forelle, WY 1

1955	CTC and cab signaling on Union Pacific 789.5 KB

Foremost, GA 1

1958	Special combinations of single-track and two-track replace double track on the Southern 960.9 KB

Forest Park, IL 1

1911	Automatic Signals on the Chicago Great Western 7.4 MB

Forest, VA 1

1941	CTC Installed on Norfolk & Western 5.1 MB

Form 19 order 1

1923	Superintendents Discuss Form "19" 2.0 MB

Forrestville, GA 1

1965	News briefs. 1965-08 749.4 KB

Forsyth, GA 1

1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Fort Dodge, IA 3

1933	Automatic Interlocking in Train Control Territory 2.3 MB
1926	Illinois Central Continuous Train Stop Approved Without Major Exceptions 1.1 MB
1926	Train Stop Without Permissive Wayside Signals Used on IC 3.5 MB

Fort Street Union Depot, Detroit, MI 2

1955	Crossing protection for 16 streets 371.1 KB
1955	Interlocking Expedites Terminal Moves 1.6 MB

Foster, IL 1

1960	News briefs. 1960-10 1.8 MB

Foster, OH 1

1929	Pennsylvania Installs APB Signaling on 86 Miles 3.7 MB

Fostoria, OH 3

1928	Dispatcher Signaling System Operates Through Sleet Storm 1.1 MB
1927	NYC First to Install Complete Train Dispatching System 8.0 MB
1950	NYC Installs Big NX Plant at Fostoria, Ohio 3.9 MB

four-aspect signaling 1

1954	New Wayside and Cab Signaling 753.2 KB

four-block signaling 1

1937	Report of Committee X – Signaling Practice 2.9 MB

four-indication signaling 1

1939	Problems of Four-Indication Signaling 1.6 MB

Fourteenth St. Yard, Chicago, IL 1

1947	Burlington Uses Radio on Switchers 909.1 KB

Fox Chase, PA 1

1965	News briefs. 1965-11 1.2 MB

Fox Jct., CO 1

1950	CTC Extended on the Rio Grande 4.4 MB

Fox Lake, IL 2

1930	Color-light Automatic Block Signals and Automatic Interlocking 2.4 MB
1949	Milwaukee Installs Automatic Block 8.2 MB

Framingham, MA 2

1962	News briefs. 1962-11 468.1 KB
1954	NYC Combines Interlockings 2.4 MB

France 7

1922	An Old Electric Interlocking in France 1.3 MB
1923	Automatics on Paris Grande Ceinture 5.0 MB
1924	Electric Interlockings On the French Northern 4.4 MB
1931	French Railways Adopt Color-Light Signals 1.3 MB
1922	News of the Month. 1922-10 368.4 KB
1960	Remote control train: Successful tests in France 209.9 KB
1924	Three-Indication Distant Signals on Alsace-Lorraine Railways 2.7 MB

Francis, MO 1

1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Frank Rhea 1

1941	Frank Rhea (obituary) 1.0 MB

Franklin Avenue, Brooklyn, NY 1

1923	BRT Automatic Interlocking 1.9 MB

Franklin Institute 1

1947	Medals Awarded by Franklin Institute 236.3 KB

Franklin Park, IL 1

1948	Gates at Three Crossings on Soo Line 1.8 MB

Franz, Ontario 1

1944	Canadian Pacific Installs Automatic Block Signaling 6.8 MB

Frazer, PA 1

1916	Some Examples of Early Signaling 351.5 KB

Fredericksburg, VA 2

1947	All-Relay Interlockings On the RF&P 1.3 MB
1947	Choice of Interlocking Control Machines 266.5 KB

Freeport, IL 2

1942	Automatic Signal Program on the Illinois Central 4.6 MB
1962	News briefs. 1962-02 1.4 MB

Freiberger, A. A. 1

1949	A. A. Freiberger 827.1 KB

freight houses 1

1950	Modern Communications In Yards and Terminals 1.4 MB

French National Railways 2

1962	Electronic Track Circuits 740.3 KB
1960	Remote control train: Successful tests in France 209.9 KB

French signaling 1

1924	Three-Indication Distant Signals on Alsace-Lorraine Railways 2.7 MB

French, NM 1

1946	ICC 50-MPH Signal Hearing 6.9 MB

Frenchtown, MT 4

1964	News briefs. 1964-02 992.4 KB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-07 788.3 KB
1965	News briefs. 1965-08 749.4 KB

Fresno, CA 10

1962	Automatic Dispatching 2.1 MB
1957	How to make non-stop meet with CTC 576.9 KB
1955	News briefs. 1955-08 830.4 KB
1960	News briefs. 1960-03 1.9 MB
1960	News briefs. 1960-05 1.0 MB
1962	News briefs. 1962-02 1.4 MB
1962	News briefs. 1962-10 461.7 KB
1962	News briefs. 1962-11 468.1 KB
1964	News briefs. 1964-04 1.3 MB
1926	Train Control Progress in 1925 3.1 MB

Fridley, MN 1

1965	Midwest RRs fight the weather 914.4 KB

Frisco Crossing, OK 1

1922	News of the Month. 1922-12 388.1 KB

Frontenac, FL 1

1962	News briefs. 1962-02 1.4 MB

Fruitvale, CA 1

1962	Remote Control Interlocking Has Time Division Multiplex System 846.3 KB

Ft. Basinger, FL 1

1963	News briefs. 1963-11 1.4 MB

Ft. Dodge, IA 1

1926	Train Control Progress in 1925 3.1 MB

Ft. Edward, NY 1

1955	News briefs. 1955-08 830.4 KB

Ft. Francis, Ontario 1

1955	How CN increased track capacity 516.4 KB

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

Ft. Orange, FL 1

1964	News briefs. 1964-12 981.5 KB

Ft. Plain, NY 1

1951	New NYC Interlocking Controlled by Synchrostep 1.2 MB

Ft. Scott, KS 2

1955	CTC moves trains on grades 762.8 KB
1965	Merging divisions require changing circuits 335.5 KB

Ft. Smith, AR 1

1943	Junction and Crossing Included in Centralized Traffic Control On the Missouri Pacific 4.7 MB

Ft. Wayne, IN 6

1950	CTC on the Wabash 2.6 MB
1961	News briefs. 1961-11 1.3 MB
1965	News briefs. 1965-07 788.3 KB
1935	Respacing Automatics on the Pennsylvania 1.8 MB
1935	Signaling for Higher Train Speeds 3.0 MB
1926	Train Control Progress in 1925 3.1 MB

Ft. William, Ontario 1

1955	How CN increased track capacity 516.4 KB

Ft. Worth & Denver 1

1960	What’s the answer? Automatic OS 354.1 KB

Ft. Worth & Denver City 4

1950	Grade Signal Controls 2.1 MB
1936	Reconstruction of Interlocking at the Dallas Union Terminal 14.8 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

Ft. Worth, TX 4

1935	Centralized Traffic Control on the Texas & Pacific 5.1 MB
1960	News briefs. 1960-03 1.9 MB
1955	Santa Fe installs CTC on single track 610.2 KB
1960	T&P moves CTC machine 78 miles 423.0 KB

Ft. Wright, WA 1

1922	News of the Month. 1922-06 516.2 KB

Fullerton, CA 1

1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Fulton Street extension, New York, NY 1

1949	Signaling and Interlocking On New Line of New York Subways 6.5 MB

Fulton Street Line, Brooklyn, NY 1

1923	BRT Automatic Interlocking 1.9 MB

Fulton, KY 6

1953	IC Installs Automatic Block 4.0 MB
1960	News briefs. 1960-05 1.0 MB
1960	News briefs. 1960-09 756.9 KB
1960	News briefs. 1960-10 1.8 MB
1961	News briefs. 1961-06 725.8 KB
1961	News briefs. 1961-11 1.3 MB

fundamental practices 2

1913	Settled at Last 824.8 KB
1935	The Rudd-Rhea Signaling Report of the Pennsylvania 9.7 MB

Funston, CO 1

1955	One CTC Machine Replaces Three 451.9 KB

fusees 1

1937	Flag and Torpedo Containers 903.1 KB

Railway Signaling: F