Railway Signaling | G

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.

G-type non-vital relays 1

1962	Automatic Dispatching 2.1 MB

Gainesville, TX 1

1922	Signal Construction on the Santa Fe 797.6 KB

Gale, IL 1

1954	CTC Increases Capacity of Double Track 4.2 MB

Galesburg, IL 10

1928	Burlington Completes Automatic Signals Chicago to Denver 5.1 MB
1932	Burlington's Reconstruction Program at Galesburg Involves Modern Interlocking Plants 2.6 MB
1931	CB&Q Installs Electric Interlockinig 3.3 MB
1926	Directing Trains By Signals 1.9 MB
1960	News briefs. 1960-03 1.9 MB
1960	News briefs. 1960-06 1.2 MB
1964	News briefs. 1964-02 992.4 KB
1964	News briefs. 1964-07 833.0 KB
1964	News briefs. 1964-11 797.3 KB
1965	News briefs. 1965-01 2.0 MB

Galion, OH 1

1922	New Signaling on the Big Four 717.4 KB

Gallatin, MO 1

1944	Head-End Collision in Manual Block 874.3 KB

Gallatin, TN 1

1962	News briefs. 1962-10 461.7 KB

Gallia Street interlocking, Portsmouth, OH 1

1931	Power Interlocking Eliminates Delays 488.8 KB

Gallup, NM 1

1960	News briefs. 1960-03 1.9 MB

Galveston, Harrisburg & San Antonio 2

1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1925	The Train Control Situation 853.0 KB

gap fillers 1

1961	News briefs. 1961-07 648.9 KB

Gardnerville, MO 1

1940	New Signaling on the Wabash 8.1 MB

Garrison, MT 1

1911	Automatic Signals on the Northern Pacific 7.2 MB

Gary, IN 9

1929	Automatic Gauntlet Signals Installed on the South Shore 1.9 MB
1947	Crossing Protection in Gary, Indiana 1.6 MB
1947	Drawbridge Interlocking on the Elgin, Joliet & Eastern 647.3 KB
1962	EJ&E Uses Tone Coding to Get Systems on One RF Channel 562.3 KB
1953	Electronics at Work in EJ&E Yard 7.8 MB
1947	Highway Crossing Protection Installed by Several Railroads in Gary, IndianaR 1.2 MB
1955	Much is new in signaling for 1955 826.7 KB
1922	News of the Month. 1922-09 562.2 KB
1928	South Shore Line Uses Spring Switches on Heavy Traffic Lines 1.4 MB

Gasconade, MO 1

1939	Drag Detectors Protect Bridges 3.2 MB

Gaston Jct., WV 1

1965	B&O would have used radio orders 565.5 KB

Gastonia, NC 1

1965	News briefs. 1965-07 788.3 KB

gate arm stripe colors 2

1950	Gate-Arm Stripe Colors 1.1 MB
1950	Gate-Arm Stripe Colors 3.4 MB

Gateway Yard, East St. Louis, IL 1

1964	News briefs. 1964-02 992.4 KB

Gauley, WV 1

1921	A New Idea in Traffic Locking On the C&O 1.7 MB

Gault, P. M. 3

1935	Crossing Bells at Flasher Signals 1.9 MB
1941	P. M. Gault obituary 1.2 MB
1939	Speeding Up Train Operation With Signaling 4.5 MB

gauntlet track 2

1941	Automatics Installed on North Shore 1.6 MB
1937	Gauntlet Signals on the B&LE 7.1 MB

Gautier, MS 1

1964	News briefs. 1964-08 811.5 KB

Gays, IL 1

1951	Single-Track With CTC Handles 40 Trains Daily 530.8 KB

GB Cabin, OH 1

1950	Remote Control of Center Sidings On Busy Double-Track Line 3.6 MB

Gembrook, Victoria, Australia 1

1922	Single Track Signaling in Australia 527.7 KB

General Electric 7

1963	Automated Rail Transit Discussed by IEEE-ASME 315.3 KB
1911	Automatic Signals on the Chicago Great Western 7.4 MB
1964	News briefs. 1964-04 1.3 MB
1935	Signal Night for New York Railroad Club 1.1 MB
1935	Signal Transformers 2.2 MB
1922	The Electric Lamp for Railway Signals 761.5 KB
1962	Toronto Railway Conference – Automatic Train Operation 448.4 KB

General Railroad Signal 1

1960	New "Look" in hotbox detectors 359.9 KB

General Railway Sgnal 1

1959	Computer simulates train operation 524.0 KB

General Railway Signal 285

1951	"Central" Increases Safety at Highway Crossings in Dayton 1.0 MB
1916	A New York Central Plant in Chicago 590.7 KB
1919	A Peculiar Accident 251.7 KB
1935	Advantages of Modern Relays 4.0 MB
1956	Aligning Searchlight Signal 1.1 MB
1936	Alining Signals on Curves 3.7 MB
1914	All Electric Interlocking at Joliet 1.5 MB
1936	All-Relay Interlocking On NYC at Syracuse 29.7 MB
1947	All-Relay Interlocking Replaces Mechanical Plant 1.5 MB
1947	All-Relay Plant on the C&EI at Danville, Ill 915.6 KB
1929	An Electric Lock for Mechanical Levers 999.0 KB
1937	APB, Remote Control, and CTC on the Baltimore & Ohio 11.9 MB
1934	Application of the Retained-Neutral Relay 842.8 KB
1955	At Portland Terminal, combined interlocking 810.6 KB
1951	Automatic Block Without Line Wires on the Kansas City Southern 723.0 KB
1933	Automatic Dwarfs? 717.9 KB
1962	Automatic Freight Train is Crewless 1.1 MB
1932	Automatic Interlocking Protects End of Double Track 2.7 MB
1947	Automatic Signaling With Spring Switches Installed on the Great Northern 734.1 KB
1911	Automatic Signals on the Northern Pacific 7.2 MB
1911	Automatic Signals on the Northern Pacific 6.3 MB
1922	Automatic Train Control in Use On American Railroads 353.7 KB
1958	B&M goes underground 725.7 KB
1959	B&M takes up track and installs traffic control, gates and flashers 735.7 KB
1950	B&O Installs All-Relay Plant 2.6 MB
1951	B&O Installs Modern Interlocking 871.3 KB
1957	BAR takes up second track and installs CTC 706.6 KB
1950	Big NX Interlocking at Atlanta 6.3 MB
1947	Burlington Concentrates CTC Control at Division Headquarters 840.8 KB
1956	Burlington Has Compact Control Machine for Consolidation of 14 Interlockings 11.3 MB
1951	Burlington Installs Extensive Interlocking at Kansas City 1.0 MB
1959	Burlington installs modified CTC 1.0 MB
1951	Burlington Simplifies CTC for Light-Traffic Single Track 1.7 MB
1958	C&O Has Good Ideas in CTC 2.5 MB
1951	Cab signal system 455.8 KB
1951	Canadian National Installs Centralized Traffic Control On a 117-Mile Sub-Division 501.4 KB
1947	Canadian Pacific Installs Absolute Permissive Block 774.8 KB
1944	Canadian Pacific Installs Automatic Block Signaling 6.8 MB
1958	Carrier sends hot box indications to dispatchers' office 810.6 KB
1958	Central opens Young Yard 2.5 MB
1943	Centralized Traffic Control Installed on 39 Miles of the Burlington 6.1 MB
1943	Centralized Traffic Control Installed on the Virginian 7.0 MB
1935	Centralized Traffic Control on the Texas & Pacific 5.1 MB
1928	Changes on the C&NW 978.4 KB
1931	Chicago, St. Paul, Minneapolis & Omaha Eliminates Nearly 20,000 Train Stops Annually 767.7 KB
1928	Circuit Polarity at Relay Contacts 526.2 KB
1958	CN consolidates interlockings 2.1 MB
1960	CNR opens Moncton yard 760.9 KB
1936	Coded Track Circuit 4.1 MB
1940	Coded Track Control 2.5 MB
1925	Color-Light Signals on C&NW 6.9 MB
1960	Computer analyzes train operation 1.2 MB
1940	Controller Adjuster 1.3 MB
1958	CP consolidates interlockings 2.0 MB
1955	Crossing gate protection with indicators for train movements 432.4 KB
1958	Crossing protection program saves 59% 553.4 KB
1935	Crossing Signals on the Southern 1.4 MB
1948	CTC Big Help to GM&O 1.7 MB
1947	CTC Down by the Ohio 2.7 MB
1950	CTC Extended on the Rio Grande 4.4 MB
1954	CTC Increases Capacity of Double Track 4.2 MB
1954	CTC Moves Heavy Trains 4.1 MB
1955	CTC moves trains on grades 762.8 KB
1943	CTC on 107 Miles of Single-Track on the Rio Grande 9.7 MB
1944	CTC On 185 Miles on Canadian National 12.3 MB
1955	CTC on single and double track 406.8 KB
1937	CTC On the Denver & Rio Grande Western 8.0 MB
1950	CTC on the Reading 6.6 MB
1952	CTC Pays Its Way on B&O 733.2 KB
1955	CTC Saves Time for Freights On 135 Miles of Single Track 4.0 MB
1959	D&H upgrades crossing protection 626.4 KB
1939	DC Time Element Relay 1.9 MB
1950	Double to Single Track with Remote Control 4.2 MB
1947	Drawbridge Interlocking on the Elgin, Joliet & Eastern 647.3 KB
1937	Drawings of Relay and Junction Box Details 1.0 MB
1962	Dynamic Indication 211.7 KB
1910	Electric Drawbridge Interlocking 1.2 MB
1915	Electric Interlocking at Aulon, Tennessee 882.6 KB
1919	Electric Interlocking at Charlottesville, VA 535.5 KB
1915	Electric Interlocking at Davis, Illinois 241.3 KB
1943	Electric Interlocking Installed On IC 12.8 MB
1954	Electric Interlocking on the Rio Grande 3.4 MB
1915	Electric Interlockings in Australia 3.9 MB
1957	Elevation causes signal changes 893.2 KB
1949	Entrance-Exit Interlocking Installed on Missouri Pacific 3.0 MB
1959	Erie consolidates interlockings 440.6 KB
1940	Facing Point Lock for Spring Switches 1.2 MB
1960	From the field 945.2 KB
1948	Gates at Three Crossings on Soo Line 1.8 MB
1915	General Railway Signal Company and Federal Signal Company Consolidated 986.1 KB
1954	General Railway Signal Company Enters Fiftieth Year 1.6 MB
1957	GN CTC's 175 miles of mainline 635.9 KB
1935	Ground Detector Relay for Instantaneous and Automatic Detection 2.3 MB
1923	GRS Automatic Train Control 4.1 MB
1927	GRS Type K Direct Current Relay 388.0 KB
1947	Highway Crossing Protection Installed by Several Railroads in Gary, IndianaR 1.2 MB
1947	Hoosac Tunnel Interlocking and CTC 1.7 MB
1955	How CN increased track capacity 516.4 KB
1959	How retarder controls function at Young Yard on the NYC 978.1 KB
1954	IC Combines Interlockings 1.5 MB
1925	IC Markham contracts: News of the Month (June 1925) 579.3 KB
1955	Improved protection at seven crossings 309.9 KB
1958	Improved signaling results from grade elimination 883.1 KB
1937	Interlocking and Signaling For New Bridge at New Orleans 5.9 MB
1956	Interlocking Consolidation: Three Into One in Baltimore 6.8 MB
1911	Interlocking on the North Western Terminal 7.6 MB
1964	Interlocking: New Solid State Coding System Is Fast 1.7 MB
1940	Interlockings Installed at Two Crossings 6.5 MB
1965	Japan, Sweden, England test ATO 6.3 MB
1944	L&N Installs CTC On an Engine District 9.0 MB
1922	Labor Board Decides that IBEW Has No Jurisdiction of Signal Men 374.5 KB
1947	Large All-Relay Interlocking on the New York Central 2.5 MB
1957	Lehigh Valley combines interlockings 404.0 KB
1957	Lehigh Valley has check-in, check-out 755.3 KB
1924	Low-Voltage Interlocking on C&NW 1.6 MB
1947	Magnetic-Stick Relays 1.0 MB
1910	Main Street Tower on the Chicago & North Western at Evanston, IL 666.9 KB
1947	Medals Awarded by Franklin Institute 236.3 KB
1927	Michigan Central Train Control Approved 800.8 KB
1960	Miniature track diagram 334.7 KB
1939	Mission Tower Interlocking at Los Angeles 9.2 MB
1959	Mobile lab evaluates class yards 830.6 KB
1947	Modern Interlocking Applied to Ore Transportation 1.1 MB
1949	Modern Signaling on a Division 6.6 MB
1943	Modernization of Automatic Signaling On the New York Central 9.8 MB
1959	Monorail is signaled electronically 573.9 KB
1947	More CTC on the Burlington 2.0 MB
1954	Motor Car Indicator 813.5 KB
1958	MP consolidates CTC machines 797.2 KB
1911	New 400-Lever Interlocking Machine 3.7 MB
1955	New Cleveland Transit System 917.8 KB
1957	New control system for automatic block uses track circuits only 1.8 MB
1922	New Desk-Type Circuit Controller 1.6 MB
1937	New Devices- March 1937 18.1 MB
1936	New Electric Interlocking and Signaling at the Mississippi River Bridge at New Orleans 7.9 MB
1959	New GRS switch machines 531.5 KB
1949	New Interlocking at Chattanooga Terminal 5.2 MB
1924	New Interlocking Construction Ideas 3.4 MB
1951	New Interlocking in Holland 1.0 MB
1949	New Interlocking in Louisville 5.3 MB
1940	New Interlockings at Windsor, Ont. On the Michigan Central 14.1 MB
1918	New Mechanical Plant on Chicago & Alton 702.8 KB
1951	New NYC Interlocking Controlled by Synchrostep 1.2 MB
1954	New Orleans Passenger Terminal 4.7 MB
1917	New Plant in Chicago Terminal District 591.7 KB
1940	New Searchlight Signal 2.7 MB
1948	New Signaling In Texas on Missouri Pacific Lines 1.8 MB
1935	New Signaling on the Boston & Maine 9.9 MB
1935	New Signaling on the Route of the C&NW "400" 9.6 MB
1927	New Triangular Signal Unit Produced by GRS Co 464.4 KB
1935	New York Central Extends South Bend Interlocking 6.0 MB
1937	New York Central Installs First Button-Control Route Interlocking 9.0 MB
1949	New York Central Installs Interlocking 3.3 MB
1944	New York Central Installs NX Interlocking at Utica 5.7 MB
1936	New York Central Interlocking at Syracuse 15.9 MB
1944	New York Central Modernizes an Interlocking 5.0 MB
1955	New York Central’s CTC – It’s Four Tracks to Two 4.1 MB
1955	News briefs. 1955-08 830.4 KB
1960	News briefs. 1960-01 1.1 MB
1960	News briefs. 1960-03 1.9 MB
1960	News briefs. 1960-06 1.2 MB
1960	News briefs. 1960-07 845.4 KB
1960	News briefs. 1960-11 875.5 KB
1961	News briefs. 1961-01 761.9 KB
1961	News briefs. 1961-03 1.0 MB
1961	News briefs. 1961-04 1.5 MB
1961	News briefs. 1961-07 648.9 KB
1961	News briefs. 1961-09 886.8 KB
1961	News briefs. 1961-11 1.3 MB
1962	News briefs. 1962-01 986.8 KB
1962	News briefs. 1962-02 1.4 MB
1962	News briefs. 1962-03 1.1 MB
1962	News briefs. 1962-06 989.1 KB
1962	News briefs. 1962-07 494.2 KB
1962	News briefs. 1962-09 838.3 KB
1963	News briefs. 1963-01 951.3 KB
1963	News briefs. 1963-02 1.3 MB
1963	News briefs. 1963-03 790.6 KB
1963	News briefs. 1963-06 961.3 KB
1963	News briefs. 1963-10 497.4 KB
1964	News briefs. 1964-02 992.4 KB
1964	News briefs. 1964-04 1.3 MB
1964	News briefs. 1964-06 812.0 KB
1964	News briefs. 1964-07 833.0 KB
1964	News briefs. 1964-08 811.5 KB
1964	News briefs. 1964-09 879.4 KB
1964	News briefs. 1964-11 797.3 KB
1964	News briefs. 1964-12 981.5 KB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-04 1.5 MB
1965	News briefs. 1965-06 1.2 MB
1965	News briefs. 1965-07 788.3 KB
1965	News briefs. 1965-10 1.1 MB
1965	News briefs. 1965-11 1.2 MB
1965	News briefs. 1965-12 609.3 KB
1922	News of the Month. 1922-01 315.5 KB
1922	News of the Month. 1922-02 323.2 KB
1922	News of the Month. 1922-03 314.9 KB
1922	News of the Month. 1922-04 613.8 KB
1922	News of the Month. 1922-05 426.4 KB
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. 1922-10 368.4 KB
1922	News of the Month. 1922-12 388.1 KB
1958	Nine layouts in one interlocking 1.7 MB
1959	North Western installs automatic gates at nine crossings 699.9 KB
1956	NX Control Replaces Lever Machine 2.8 MB
1936	NX Electric Interlocking 3.8 MB
1954	NYC Combines Interlockings 2.4 MB
1927	NYC First to Install Complete Train Dispatching System 8.0 MB
1936	NYC Modernizes Electric Interlocking 9.0 MB
1964	NYC Moves CTC Point of Control 1.2 MB
1951	On the Baltimore & Ohio New Interlocking Speeds Trains 641.0 KB
1955	One CTC Machine Replaces Three 451.9 KB
1958	One track does work of two on Maine Central 442.6 KB
1961	Overlay Circuit Reduces Joints 306.6 KB
1959	P&LE installs multiple track CTC 1.1 MB
1951	P&LE Rebuilds Interlocking 957.2 KB
1936	Phantom Indications 1.8 MB
1951	Portland Terminal Solves Crossing Protection Problem 676.8 KB
1935	Power Transfer Relay 1.3 MB
1957	Pushbutton CTC Machine on NYC Is First of Its Kind 3.3 MB
1915	Putting a GRS Interlocking Plant in Service 301.9 KB
1954	Quebec, North Shore & Labrador 7.8 MB
1961	Railroad Will Pay For CTC Out Of Accrued Savings 842.9 KB
1922	Railroads Argue Against Automatic Stops at ICC Hearing 436.8 KB
1920	Relation of Insulated Joint to Track Circuit 2.5 MB
1937	Remote Control By Code 7.0 MB
1955	Remote Control Eliminates Train Stops 1.3 MB
1931	Remote Control for Interlocking Saves $6,000 Annually 328.9 KB
1944	Remote Control Interlocking on the D&RGW 4.3 MB
1953	Remote Control Interlockings Improve Terminal Operation 551.4 KB
1947	Remote Control on Baltimore & Ohio 595.8 KB
1944	Remote Control Project Saves Train Time on the Baltimore & Ohio 3.5 MB
1958	Remote control saves money 868.5 KB
1944	Rio Grande has Longest CTC 9.2 MB
1940	Route Type Interlocking at Tower Grove in St. Louis 11.1 MB
1958	RS&C 50th anniversary: Railroad communications ... from Morse to microwave 3.3 MB
1939	Safety and Design of Signal Circuits 5.0 MB
1957	Seaway diverts CN mainline 532.3 KB
1936	Semaphore Type Crossing Gate Developed on the Alton 8.3 MB
1916	Service Record of Position-Light Signals 580.8 KB
1957	Signal controls by track circuit only 575.8 KB
1949	Signal Research and Development 2.9 MB
1911	Signaling and Interlocking on the North Western Terminal in Chicago 1.1 MB
1925	Signaling at the Age of Maturity 2.0 MB
1933	Signaling Construction During 1932 632.3 KB
1937	Signaling Eliminates Platform Maintenance 3.9 MB
1960	Signaling enters automation 630.7 KB
1947	Signals and Slide Fences on the Spokane, Portland & Seattle 1.8 MB
1944	Signals Direct Trains at Junction On the Denver & Rio Grande Western and the Denver & Salt Lake 2.8 MB
1951	Simple Interlocking Saves Many Train Stops 375.6 KB
1933	Simplified Interlocking Installed at the Dayton Terminal 700.6 KB
1922	Single Track Signaling in Australia 527.7 KB
1951	Single-Track With CTC Handles 40 Trains Daily 530.8 KB
1935	Snubbing Rectifier for 2A Signal 1.9 MB
1952	Soo Line Completes Signaling on 260 Miles of Single Track 737.7 KB
1958	Special combinations of single-track and two-track replace double track on the Southern 960.9 KB
1951	Special Protection Problems Solved With Gates and Flashers 1.5 MB
1934	Spring Derail for Drawbridge Protection 535.0 KB
1951	Street and Railroad Crossing Protection Combined 529.9 KB
1960	Subway train is automatic 552.2 KB
1930	Table Interlocker with Vertical Locking 467.4 KB
1949	Texas & Pacific New All-Relay Interlocking 4.3 MB
1911	The Absolute Permissive System 6.7 MB
1911	The Absolute Permissive System 881.6 KB
1911	The Newest Terminal Interlocking 611.9 KB
1955	The Reading has compact control machine for consolidated interlocking 511.5 KB
1924	Three Train Control Contracts Let 1.9 MB
1931	Three-Track Signaling on 13.5 Miles of the C&NW 5.4 MB
1962	Toronto Railway Conference – Automatic Train Operation 448.4 KB
1937	Track Shunting Problems 2.5 MB
1957	Traffic signals and crossing gates coordinated in Cumberland, MD 730.3 KB
1936	Train Control on the B&O Diesel 2.6 MB
1922	Train Control on the C&NW 824.8 KB
1926	Train Control Progress in 1925 3.1 MB
1928	Train Order Indicators Used Successfully on the CI&L 604.3 KB
1957	Two interlockings save time and money 547.8 KB
1961	Type SA-1 Searchlight Signal 189.5 KB
1954	Unique Combinations of Single-Track and Two-Track Developed on the Southern 3.8 MB
1915	Victoria Jubilee Bridge Protection 570.0 KB
1957	Where Two Tracks Do the Work of Four 3.2 MB
1936	Wilmer W. Salmon, President of General Railway Signal Company, Dies 2.8 MB
1955	Yard operations improved by new interlocking and car retarders 621.2 KB

General Railway SIgnal 2

1964	News briefs. 1964-09 879.4 KB
1922	News of the Month. 1922-11 361.5 KB

Geneva, IL 1

1950	Longest Continuous Double-Track CTC Is on North Western 5.1 MB

Geneva, NY 1

1960	News briefs. 1960-10 1.8 MB

Gentry, AR 1

1961	News briefs. 1961-02 1.4 MB

Georgia 1

1947	Automatic Block With Spring Switches installed on the Georgia Railroad 851.4 KB

Georgia & Florida 1

1959	Signaling: 1960 225.2 KB

Georgia Southern & Florida 2

1921	New Interlockings at Jacksonville Terminal 3.4 MB
1960	News briefs. 1960-11 875.5 KB

Georgiana, AL 2

1962	News briefs. 1962-05 826.8 KB
1965	News briefs. 1965-05 1.4 MB

Gerlach, NV 1

1950	Modern Signaling Systems On Western Pacific 16.1 MB

Gerlach, OK 1

1960	News briefs. 1960-03 1.9 MB

German signaling 1

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

German State Railways 1

1933	New Train Stop System Developed in Germany 399.3 KB

Germany 4

1933	New Train Stop System Developed in Germany 399.3 KB
1924	Three-Indication Distant Signals on Alsace-Lorraine Railways 2.7 MB
1957	Track circuit developments in Europe 234.8 KB
1959	What's the answer? Repeater signals 691.6 KB

Giard, MN 1

1940	New Automatic Block Signaling on the Milwaukee 6.3 MB

Gibbs, IL 1

1929	Centralized Control Used for Ends of Double Track 2.1 MB

Gibson City, IL 1

1921	Educational Meetings On the Illinois Central 616.5 KB

Gibson interlocking, Corning, NY 1

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

Gibson, IN 3

1949	A Mile-Stone In Signaling 1.2 MB
1958	Central opens Young Yard 2.5 MB
1928	Electric Interlocker and Switch Control Speeds Up Yard Operation 2.4 MB

Gibson, NY 1

1960	Signal construction steady in 1959 385.2 KB

Gila, AZ 2

1960	News briefs. 1960-04 896.6 KB
1959	Pushbutton console for CTC 785.3 KB

Gilbert, WV 1

1964	News briefs. 1964-02 992.4 KB

Gilkeson, PA 1

1959	Signaling: 1960 225.2 KB

Gilkeson, WV 1

1932	Centralized Traffic Control Installed on the Baltimore & Ohio 4.3 MB

Gilman, IL 8

1952	Double-Track CTC on Illinois Central 759.7 KB
1930	Interlockers Replaced by Centralized Traffic Control on the Illinois Central 1.8 MB
1963	News briefs. 1963-03 790.6 KB
1964	News briefs. 1964-02 992.4 KB
1965	News briefs. 1965-01 2.0 MB
1923	News of the Month. 1923-07 1.9 MB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1925	Signaling Two Tracks to Capacity 2.8 MB

Gilmore Jct., NE 1

1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Gilmore, Omaha, NE 1

1965	News briefs. 1965-01 2.0 MB

Girard Jct., PA 4

1937	New York Central Installs First Button-Control Route Interlocking 9.0 MB
1955	New York Central’s CTC – It’s Four Tracks to Two 4.1 MB
1955	News briefs. 1955-08 830.4 KB
1957	Where Two Tracks Do the Work of Four 3.2 MB

Girard, IL 1

1962	News briefs. 1962-02 1.4 MB

Gise, NM 1

1922	Signal Construction on the Santa Fe 797.6 KB

Gladbrook, IA 1

1918	Maintaining an Interlocking Plant at High Tide 241.8 KB

Gladstone, NJ 1

1931	The Signaling of the Lackawanna Electrified Territory 5.9 MB

Glass Library and Museum 1

1951	Glass Library and Museum 319.8 KB

Gleichen, Alberta 1

1964	News briefs. 1964-10 768.6 KB

Glen Carbon, IL 1

1937	Automatic Signals on Litchfield & Madison 3.5 MB

Glen Echo, OH 1

1965	News briefs. 1965-10 1.1 MB

Glen Lyn, VA 1

1961	News briefs. 1961-04 1.5 MB

Glen Tay, Ontario 1

1960	News briefs. 1960-07 845.4 KB

Glencoe, IL 1

1941	Automatics Installed on North Shore 1.6 MB

Glendive, MT 4

1960	News briefs. 1960-07 845.4 KB
1961	News briefs. 1961-02 1.4 MB
1961	News briefs. 1961-07 648.9 KB
1963	News briefs. 1963-06 961.3 KB

Glenside, PA 1

1931	Re-Signaling of the Reading Electrified Territory 778.0 KB

Glenwood Springs, CO 1

1944	Rio Grande has Longest CTC 9.2 MB

Glenwood, MN 1

1955	Remote Control Eliminates Train Stops 1.3 MB

Glenwood, PA 1

1959	Signaling: 1960 225.2 KB

GN Cabin, OH 1

1950	Remote Control of Center Sidings On Busy Double-Track Line 3.6 MB

Godfrey, IL 2

1941	Interlocking and Automatic Signals on the Alton 3.0 MB
1965	News briefs. 1965-04 1.5 MB

Gold Run, CA 1

1964	News briefs. 1964-07 833.0 KB

Golden, BC 1

1965	News briefs. 1965-01 2.0 MB

Gordonsville, VA 3

1928	C&O Signaling and Train Control Facilitate Operation 4.1 MB
1941	Centralized Traffic Control On the Chesapeake & Ohio 7.1 MB
1926	Train Control Progress in 1925 3.1 MB

Government Bridge, Rock Island, IL 1

1916	Government Drawbridge Signaling 670.2 KB

government subsidies 1

1931	Competition 774.2 KB

Grabill, IN 1

1950	CTC on the Wabash 2.6 MB

Graces, AL 1

1962	News briefs. 1962-10 461.7 KB

grade crossing predictors 5

1964	Gate Control is by GCPs 1.4 MB
1965	GCPs can be used for various types of grade crossings 369.4 KB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-07 788.3 KB
1963	Theory and Operation of Grade Crossing Predictor is Explained 840.9 KB

grade elimination 1

1958	Improved signaling results from grade elimination 883.1 KB

grade separation 3

1957	Elevation causes signal changes 893.2 KB
1910	Main Street Tower on the Chicago & North Western at Evanston, IL 666.9 KB
1917	Rock Island Signaling on the Chicago Terminal 1.2 MB

grade signals 2

1950	Grade Signal Controls 2.1 MB
1941	Non-Stop Permissive Signals 1.4 MB

grade time control 1

1952	Chicago's Newest Subway Has Automatic Block Signaling and Train Stop 1.1 MB

grade time controls 1

1958	Subway consolidates interlockings 2.2 MB

grade time signals 2

1944	Automatic Signaling, Train Stop, and Route Interlocking Installed in the Chicago Subways 8.6 MB
1949	Signaling and Interlocking On New Line of New York Subways 6.5 MB

Grafton, WV 4

1965	B&O would have used radio orders 565.5 KB
1952	CTC Pays Its Way on B&O 733.2 KB
1951	More Signal Construction in 1950 1.0 MB
1929	Trains on Baltimore & Ohio Operate by Signal Indication Over Single-Track Lines 2.7 MB

Graham (Galesburg, IL) 1

1932	Burlington's Reconstruction Program at Galesburg Involves Modern Interlocking Plants 2.6 MB

Grand Ave., St. Louis, MO 1

1956	NX Control Replaces Lever Machine 2.8 MB

Grand Blanc, MI 1

1958	C&O Has Good Ideas in CTC 2.5 MB

Grand Central Terminal, New York, NY 8

1925	Duplex Signaling of Fourth Track Solves Grand Central Problem 1.1 MB
1921	Fire Threatened Tie Up At Grand Central Terminal 1.5 MB
1943	Herbert S. Balliet obituary 614.8 KB
1927	Maintenance of Interlockings in the Grand Central Terminal 2.8 MB
1935	Multiple-Block Signaling 7.0 MB
1911	New 400-Lever Interlocking Machine 3.7 MB
1961	News briefs. 1961-11 1.3 MB
1911	The Newest Terminal Interlocking 611.9 KB

Grand Central, New York, NY 1

1964	Eight cities test automatic train operation 1.1 MB

Grand Central-Times Square, New York, NY 1

1963	Automated Rail Transit Discussed by IEEE-ASME 315.3 KB

Grand Island, NE 1

1951	More Signal Construction in 1950 1.0 MB

Grand Junction, CO 3

1943	CTC on 107 Miles of Single-Track on the Rio Grande 9.7 MB
1955	One CTC Machine Replaces Three 451.9 KB
1944	Rio Grande has Longest CTC 9.2 MB

Grand Prairie, TX 1

1935	Centralized Traffic Control on the Texas & Pacific 5.1 MB

Grand Rapids, MI 4

1954	Loudspeakers and Interlocking Improve Yard Operation 4.7 MB
1949	Modern Signaling on a Division 6.6 MB
1960	News briefs. 1960-07 845.4 KB
1922	News of the Month. 1922-03 314.9 KB

Grand Trunk 6

1908	A New 10,000 Line Telephone Exchange for Paris, France 2.2 MB
1910	Electric Interlocking at Griffith, Indiana 964.1 KB
1915	New Interlockers on the Flint Belt Line 2.2 MB
1922	News of the Month. 1922-07 346.9 KB
1922	News of the Month. 1922-08 394.0 KB
1915	Victoria Jubilee Bridge Protection 570.0 KB

Grand Trunk Pacific 1

1922	News of the Month. 1922-09 562.2 KB

Grand Trunk Western 28

1927	Additional Solutions to Call-On Signal Circuit Problem 2.8 MB
1937	Approach Locking on Dwarf Signals 1.2 MB
1934	CTC Replaces Staff on GTW 2.6 MB
1908	Electro-Pneumatic Interlocking Plant On the Chicago & Western Indiana Railroad at 47th Street, Chicago 3.9 MB
1950	Gate-Arm Stripe Colors 3.4 MB
1953	Grand Trunk Installs CTC on 37 Miles of Busy Single Track 3.5 MB
1958	Interlocking saves time and money for the Belt Railway of Chicago 2.0 MB
1940	Interlockings Installed at Two Crossings 6.5 MB
1952	Interlockings Modernized at Three Railroad Crossings 974.7 KB
1957	More automation for signaling in 1957 1.2 MB
1916	New Automatic Signals on Grand Trunk 997.0 KB
1923	New Interlockers on the Flint Belt Line 1.6 MB
1935	New York Central Extends South Bend Interlocking 6.0 MB
1961	News briefs. 1961-10 1.0 MB
1964	News briefs. 1964-04 1.3 MB
1922	News of the Month. 1922-01 315.5 KB
1922	News of the Month. 1922-09 562.2 KB
1931	Oil or Electric Switch Lamps? 1.8 MB
1958	One track does work of two 521.4 KB
1949	Protection at All Crossings In Battle Creek on the Grand Trunk Western 6.6 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1937	Signaling Eliminates Platform Maintenance 3.9 MB
1958	Signaling to cut expenses in '58 411.4 KB
1929	Simplified Electric Interlocking Plant on Michigan Central.pdf 3.6 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1939	Today's Crossing Protection Problem 1.8 MB
1937	Warning Time With Crossing Gates 1.3 MB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

Grande Ceinture, Paris, France 1

1923	Automatics on Paris Grande Ceinture 5.0 MB

Grandview Yard, Columbus, OH 1

1965	PRR upgrades yard, improves service 1.2 MB

Grandville, MI 1

1945	CTC Solves Operating Problems On the Pere Marquette 4.3 MB

Granger, WY 1

1955	News briefs. 1955-08 830.4 KB

Granite, WY 1

1955	CTC and cab signaling on Union Pacific 789.5 KB

Grant, UT 1

1954	Electric Interlocking on the Rio Grande 3.4 MB

graphic train charts 1

1937	Track Occupancy Indications in CTC Territory 2.7 MB

Gratiot St., St. Louis, MO 2

1956	Crossing Protection In Industrial Area 3.1 MB
1908	Interlocking Facilities of the St. Louis Terminal Railroad Assn. of St. Louis 7.2 MB

Gravenhurst, Ontario 1

1963	News briefs. 1963-03 790.6 KB

Grays Lake, IL 1

1930	Color-light Automatic Block Signals and Automatic Interlocking 2.4 MB

Great Britain 8

1931	Automatic Train Control on Great Western of England 1.7 MB
1931	British Report on Automatic Train Control 2.6 MB
1922	British Report on Light Signals 449.7 KB
1961	News briefs. 1961-06 725.8 KB
1934	Paddington Power Signaling 1.9 MB
1957	Track circuit developments in Europe 234.8 KB
1922	Train Control Approved by the British 7.0 MB
1941	War on the British Railways 986.3 KB

Great Central 1

1922	News of the Month. 1922-11 361.5 KB

Great Lakes Steel 1

1963	News briefs. 1963-05 720.2 KB

Great Northern 68

1960	Fourteen RRs adopt new operating code 945.4 KB
1921	Absolute Permissive Block Signal System 1.2 MB
1930	Approach-Lighting a Leaving Signal 1.0 MB
1926	Are Smash-Boards Necessary at Automatic Crossing Plants? 816.3 KB
1928	Arrangement of Color Light Units 816.2 KB
1932	Automatic Interlocking Protects End of Double Track 2.7 MB
1933	Automatic Operation 963.8 KB
1947	Automatic Signaling With Spring Switches Installed on the Great Northern 734.1 KB
1935	Checking Signal Lamps 3.3 MB
1956	Conelrad – A Civil Defense Measure … How Some Railroads are Participating 4.1 MB
1933	Control of Switch from Locomotive Cab 1.2 MB
1962	DM&IR Consolidates CTC Control Miles 384.7 KB
1915	Duluth Terminal Trestle Signaling 2.3 MB
1931	Efficiency Tests 1.9 MB
1928	Emergency Release Circuits 2.4 MB
1934	Ends of Double Track Equipped With Automatic Interlocking 987.5 KB
1935	FPL Adjustment on Spring Switches 1.3 MB
1931	GN Asks to Remove Train Control 215.6 KB
1957	GN CTC's 175 miles of mainline 635.9 KB
1963	GN Radio Works in Tunnel 1.1 MB
1928	GN Replaces Semaphores with Color Light Signals 1.2 MB
1955	How the Great Northern reduces accidents at highway crossings 425.6 KB
1947	ICC Holds Signal Hearing 507.5 KB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1935	Letter to the Editor- Crossing Protection Situation 2.7 MB
1925	Light Signals, Color, Position, or Color-Position 1.5 MB
1932	Location of Home Signals 853.4 KB
1957	More automation for signaling in 1957 1.2 MB
1955	Much is new in signaling for 1955 826.7 KB
1960	News briefs. 1960-01 1.1 MB
1960	News briefs. 1960-03 1.9 MB
1960	News briefs. 1960-06 1.2 MB
1960	News briefs. 1960-07 845.4 KB
1960	News briefs. 1960-09 756.9 KB
1961	News briefs. 1961-06 725.8 KB
1961	News briefs. 1961-07 648.9 KB
1962	News briefs. 1962-01 986.8 KB
1963	News briefs. 1963-06 961.3 KB
1964	News briefs. 1964-02 992.4 KB
1964	News briefs. 1964-04 1.3 MB
1964	News briefs. 1964-10 768.6 KB
1965	News briefs. 1965-09 381.8 KB
1922	News of the Month. 1922-03 314.9 KB
1922	News of the Month. 1922-04 613.8 KB
1922	News of the Month. 1922-06 516.2 KB
1938	Obligation for Crossing Protection 1.0 MB
1927	Organization of Railroad Signal Departments 3.9 MB
1931	Precision-Base Lamps 1.4 MB
1921	Proposed Modification of Stop-and-Proceed Rule 1.4 MB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1933	Reducing Unnecessary Train Stops 2.5 MB
1933	Replacing Semaphores 997.0 KB
1925	Report on Economics of Signaling 606.1 KB
1937	Route Control Interlocking – A New Signaling Development 2.9 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1926	Semaphore or Light Signals? 1.8 MB
1935	Signaling at Spring Switches 2.6 MB
1933	Signaling Construction During 1932 632.3 KB
1936	Slide Detector Fences 4.3 MB
1932	Smashboard Mechanisms 1.7 MB
1937	Special Locking Release 2.4 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1925	The Train Control Situation 853.0 KB
1934	Use of Marker Lamps 516.1 KB
1958	What's the answer? Approach lighting 236.9 KB
1956	When Dispatchers Move ... Carrier Saves Wire Pair 1.3 MB
1928	Why Markers for Automatic Signals? 494.6 KB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

Great Northern of Ireland 1

1922	News of the Month. 1922-07 346.9 KB

Great Western 4

1931	Automatic Train Control on Great Western of England 1.7 MB
1931	British Report on Automatic Train Control 2.6 MB
1922	News of the Month. 1922-10 368.4 KB
1934	Paddington Power Signaling 1.9 MB

Greater Winnipeg Water District 1

1958	Nine layouts in one interlocking 1.7 MB

Green Bay & Western 1

1965	Midwest RRs fight the weather 914.4 KB

Green Bay, WI 3

1929	C&NW Employs Centralized Control To Speed Up Trains 3.0 MB
1958	Crossing protection program saves 59% 553.4 KB
1947	ICC Signal Hearings 179.7 KB

Green Island, IA 4

1927	Comparative Maintenance Costs of Signaling on the CM&StP 2.9 MB
1964	Milwaukee installs its first microwave 277.4 KB
1951	More Signal Construction in 1950 1.0 MB
1951	Single Track with CTC Replaces Double Track on Milwaukee 586.0 KB

Green Island, NY 1

1962	News briefs. 1962-03 1.1 MB

Green River bridge 1

1965	News briefs. 1965-01 2.0 MB

Green River drawbridge, KY 1

1964	News briefs. 1964-10 768.6 KB

Green River, UT 1

1955	One CTC Machine Replaces Three 451.9 KB

Green's Farm, NY 1

1915	Extension of New Haven signals 684.8 KB

Greene Jct., PA 1

1955	Yard operations improved by new interlocking and car retarders 621.2 KB

Greenfield, MA 1

1962	News briefs. 1962-02 1.4 MB

Greensboro, NC 1

1963	News briefs. 1963-02 1.3 MB

Greensburg, IN 2

1929	Manual Block Signals Controlled Remotely on the Big Four 1.1 MB
1962	News briefs. 1962-09 838.3 KB

Greenville, PA 1

1937	Gauntlet Signals on the B&LE 7.1 MB

Greenville, SC 2

1965	News briefs. 1965-07 788.3 KB
1924	Three Train Control Contracts Let 1.9 MB

Greenwich, CT 1

1915	Extension of New Haven signals 684.8 KB

Greenwich, OH 1

1965	News briefs. 1965-10 1.1 MB

Greenwood, NE 1

1955	CTC on single and double track 406.8 KB

Greenwood, SC 2

1960	News briefs. 1960-06 1.2 MB
1961	News briefs. 1961-04 1.5 MB

Gregory, MN 3

1964	News briefs. 1964-01 535.9 KB
1964	News briefs. 1964-02 992.4 KB
1964	News briefs. 1964-07 833.0 KB

Gresham, Chicago, IL 3

1937	Automatic Gates on the Rock Island 7.3 MB
1938	Electric Switch Heaters at Rock Island Interlocking 1.8 MB
1953	Route Lever Interlocking on Rock Island 6.5 MB

Gretna, Scotland 2

1915	Rule 55 and the Gretna Accident 1.8 MB
1915	The Gretna Disaster 252.1 KB

Griffith, AZ 3

1922	News of the Month. 1922-04 613.8 KB
1922	News of the Month. 1922-09 562.2 KB
1922	Signal Construction on the Santa Fe 797.6 KB

Griffith, IN 3

1910	Electric Interlocking at Griffith, Indiana 964.1 KB
1963	News briefs. 1963-05 720.2 KB
1932	The Erie Installs Either-Direction Signaling 1.6 MB

Grinnell, IA 1

1947	ICC Signal Hearings 179.7 KB

Griswold 1

1954	Automatic Gates Increase Safety 3.2 MB

Griswold Signal 14

1958	CP consolidates interlockings 2.0 MB
1943	Crossing Protection on Milwaukee 5.7 MB
1958	Crossing protection program saves 59% 553.4 KB
1931	Crossing Protection Signals on the Milwaukee Road 413.9 KB
1957	CTC on the SP has special devices 518.8 KB
1948	Gates at Three Crossings on Soo Line 1.8 MB
1955	How the Great Northern reduces accidents at highway crossings 425.6 KB
1955	Improved protection at seven crossings 309.9 KB
1959	North Western installs automatic gates at nine crossings 699.9 KB
1956	Plastic Track Model Is Big Picture for Levermen 1.4 MB
1927	Rotating Stop Signal for Highway Grade Crossings 1.0 MB
1952	Soo Line Completes Signaling on 260 Miles of Single Track 737.7 KB
1951	Special Protection Problems Solved With Gates and Flashers 1.5 MB
1960	What’s the answer? Automatic OS 354.1 KB

Grondahl, Lars O. 1

1947	Medals Awarded by Franklin Institute 236.3 KB

ground detector relay 1

1935	Ground Detector Relay for Instantaneous and Automatic Detection 2.3 MB

ground frame 1

1919	Block Signaling Practice on a British Railway (Part 3) 337.3 KB

ground tester 1

1941	Ground Tester 704.0 KB

grounds 1

1965	AAR and RLEA reply to RS&I exceptions 858.7 KB

Grove, VA 1

1959	Pushbutton console for CTC 785.3 KB

Groveton, GA 1

1947	Automatic Block With Spring Switches installed on the Georgia Railroad 851.4 KB

GRS TrafficMaster 1

1956	Burlington Has Compact Control Machine for Consolidation of 14 Interlockings 11.3 MB

guides for success 1

1949	Yardsticks 2.0 MB

Gulf Coast Lines 1

1954	New Orleans Passenger Terminal 4.7 MB

Gulf, Colorado & Santa Fe 3

1954	CTC Improves Train Operation 3.3 MB
1934	Moving Interlocking Machines 1.1 MB
1936	Reconstruction of Interlocking at the Dallas Union Terminal 14.8 MB

Gulf, Mobile & Northern 1

1935	Safety of High Speed Trains 5.2 MB

Gulf, Mobile & Ohio 22

1960	Crossings are safer after 10 years 454.4 KB
1947	Crossover protection on the GM&O 2.6 MB
1948	CTC Big Help to GM&O 1.7 MB
1950	Gulf, Mobile & Ohio Protects All Street Crossings in Springfield 2.6 MB
1955	Much is new in signaling for 1955 826.7 KB
1956	New Three-Track Interchange Includes Interlocking and Talk-Backs 8.9 MB
1955	News briefs. 1955-08 830.4 KB
1959	News briefs. 1959-05 506.5 KB
1961	News briefs. 1961-05 1.1 MB
1962	News briefs. 1962-02 1.4 MB
1962	News briefs. 1962-08 675.9 KB
1962	News briefs. 1962-09 838.3 KB
1963	News briefs. 1963-06 961.3 KB
1963	News briefs. 1963-11 1.4 MB
1964	News briefs. 1964-02 992.4 KB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-04 1.5 MB
1965	News briefs. 1965-10 1.1 MB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1961	Survey Tells How Railroads Use Hotbox Detectors 1.8 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1965	What's the Answer? 1965-07 629.7 KB

Gulfport, IL 1

1965	Midwest RRs fight the weather 914.4 KB

Gunn, MN 1

1960	News briefs. 1960-01 1.1 MB

Gurdon, AR 1

1958	MP consolidates CTC machines 797.2 KB

Guyandot, WV 1

1955	C&O Consolidates Interlockings 3.2 MB

Railway Signaling: G