Railway Signaling | A

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.

"Abraham Lincoln" 1

1936	Train Control on the B&O Diesel 2.6 MB

A & S Crossing, IL 1

1937	Automatic Signals on Litchfield & Madison 3.5 MB

AAR Signal Section 2

1943	Herbert S. Balliet obituary 614.8 KB
1949	Special Controls for Crossing Protection 971.5 KB

AAR units 1

1961	Interlocking Costs 293.9 KB

Abbott, IL 1

1929	Spring Switches on Illinois Central 415.8 KB

Aberdeen, MD 1

1961	Railroad Will Pay For CTC Out Of Accrued Savings 842.9 KB

Aberdeen, NC 1

1962	News briefs. 1962-04 1.2 MB

Aberdeen, SD 3

1947	Annual Review and Outlook 425.1 KB
1928	Automatic Interlockers Are Profitable Investments 3.3 MB
1947	Milwaukee Installs Block System on 98 Miles 1.2 MB

Abilene, VA 4

1960	News briefs. 1960-03 1.9 MB
1960	News briefs. 1960-05 1.0 MB
1960	News briefs. 1960-10 1.8 MB
1960	News briefs. 1960-11 875.5 KB

absolute permissive block signaling 56

1965	AAR and RLEA reply to RS&I exceptions 858.7 KB
1921	Absolute Permissive Block Signal System 1.2 MB
1937	APB Circuits 1.1 MB
1937	APB, Remote Control, and CTC on the Baltimore & Ohio 11.9 MB
1941	Automatic Signaling and Tunnel Protection On the Denver & Salt Lake 6.7 MB
1967	Block signal systems 2.0 MB
1917	Block Signals on the Monon 675.3 KB
1947	Canadian Pacific Installs Absolute Permissive Block 774.8 KB
1944	Canadian Pacific Installs Automatic Block Signaling 6.8 MB
1925	Comparison Between the APB System on Single Track and Overlap Circuits 654.1 KB
1949	Controlled Overlaps for Single-Track APB Signaling 1.5 MB
1939	CTC and Automatic Signals on the Rock Island 6.6 MB
1947	CTC Down by the Ohio 2.7 MB
1930	Directional Control and Approach Lighting 523.4 KB
1936	Electric Lighting of Semaphores 867.6 KB
1939	Electric Lights for Semaphores 1.9 MB
1962	Electric Switch Lamp Lighting Helps Reduce Operating Expense 661.7 KB
1940	Entering the Main Line 1.3 MB
1960	From the field 945.2 KB
1946	ICC 50-MPH Signal Hearing 6.9 MB
1930	Letter to the Editor- APB Signal Indications 1.0 MB
1937	Location of Signals at Spring Switches 1.3 MB
1947	Medals Awarded by Franklin Institute 236.3 KB
1913	New Block Signaling on the North-Western 1.8 MB
1957	New control system for automatic block uses track circuits only 1.8 MB
1948	New Signaling In Texas on Missouri Pacific Lines 1.8 MB
1943	New York, Chicago & St. Louis Installs Centralized Traffic Control on Busy Sections of Single Track 7.9 MB
1955	News briefs. 1955-08 830.4 KB
1922	News of the Month. 1922-07 360.7 KB
1922	News of the Month. 1922-08 394.0 KB
1922	News of the Month. 1922-11 361.5 KB
1939	Operation by Signal Indication on Single Track 846.7 KB
1923	Permissive Block Signal Circuits 1.1 MB
1940	Proceeding By a Head-Block Signal 1.9 MB
1943	Progress in the Use of Coded Track Circuits 1.6 MB
1924	Results of Train Control Test on Pennsylvania 3.1 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1937	Signal Construction on the Wabash 12.2 MB
1957	Signal controls by track circuit only 575.8 KB
1937	Signaling at Lap Sidings 1.1 MB
1937	Signaling at Lap Sidings 2.6 MB
1937	Signaling on the Wabash 3.7 MB
1947	Signals and Slide Fences on the Spokane, Portland & Seattle 1.8 MB
1941	Simplified Signaling 426.9 KB
1922	Single Track Signaling in Australia 527.7 KB
1940	Single-Track Signaling 2.5 MB
1924	Study of Train Control on the Michigan Central 2.1 MB
1911	The Absolute Permissive System 6.7 MB
1911	The Absolute Permissive System 881.6 KB
1954	Train Operations When CTC Fails 2.0 MB
1961	Trainmen Read Hotbox Locator 1.1 MB
1920	What Scheme of Signaling is Most Desirable? 6.8 MB
1958	What's the answer? Approach lighting 236.9 KB
1958	What's the answer? CTC locking 269.2 KB
1936	Wilmer W. Salmon, President of General Railway Signal Company, Dies 2.8 MB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

absolute signals 6

1950	Differentiation Between Signals 1.1 MB
1950	Differentiation Between Signals 955.8 KB
1947	Light-out Protection at Home Signals 233.7 KB
1960	What's the answer? Absolute signals 477.6 KB
1960	What's the answer? Absolute signals 279.1 KB
1961	What’s the Answer? 1961-04 960.3 KB

absolute staff 1

1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

AC-powered switch lamps 1

1962	Electric Switch Lamp Lighting Helps Reduce Operating Expense 661.7 KB

accident 43

1944	A Collision Despite Automatic Signals 2.7 MB
1932	A Detector Bar Fails 1.5 MB
1931	A Lesson from a False-Clear Failure 577.9 KB
1935	Accident at Automatic Plant 4.5 MB
1935	Accident at Drawbridge 1.4 MB
1941	Accident at Interlocking 1.3 MB
1936	Accident in Automatic Block Signal Territory 4.7 MB
1943	Accident Involves Signaling 1.0 MB
1921	Accident on Porter, Indiana Interlocking Plant 1.1 MB
1936	Bad Collisions on Best Railroads 2.5 MB
1946	Burlington Tests Show Signals Adequate 1.3 MB
1929	C&EI Derailment and Collision at Chicago 755.9 KB
1935	Call-on Signal Involved In Accident 1.1 MB
1935	Collision on the Erie 2.2 MB
1935	Collision on the T&P 2.0 MB
1944	Head-End Collision in Manual Block 874.3 KB
1922	ICC Report on Winslow Junction Accident 416.7 KB
1957	ICC Reports on NYC wreck 205.5 KB
1961	ICC Reports on Railroad Safety 194.7 KB
1935	Improving Automatic Interlockings 3.5 MB
1965	Indication locking inadequate says ICC in report 849.9 KB
1943	Lap Order Results in an Accident 818.6 KB
1935	Letter to the Editor: Use of Cab Signals 1.2 MB
1946	More Difficult to Get a Call-On Signal 488.8 KB
1944	New York Central Installs NX Interlocking at Utica 5.7 MB
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. 1922-07 360.7 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. 1922-11 361.5 KB
1922	News of the Month. 1922-12 388.1 KB
1932	Now That It Has Happened 1.0 MB
1940	Panama Limited Collides With Louisiane 1.0 MB
1920	Pere Marquette Resort Special in Head-On Collision 354.4 KB
1918	Rear End Collision on the Michigan Central 471.2 KB
1937	Rear-End Collision 1.3 MB
1915	Rule 55 and the Gretna Accident 1.8 MB
1935	Signaling for Higher Train Speeds 3.0 MB
1922	The Bryn Athyn Collision on the P&R 690.9 KB
1915	The Gretna Disaster 252.1 KB
1940	Two Accidents on the Illinois Central 2.8 MB

accidents 11

1940	ATC Tests Ordered 676.8 KB
1935	Bells as Accessory Highway Crossing Protection 3.5 MB
1958	Decrease in signal failures reported by ICC Bureau of Safety 629.9 KB
1946	ICC 50-MPH Signal Hearing 6.9 MB
1959	ICC reports on Erie wreck 440.4 KB
1935	Letter to the Editor: Highways vs. Railroads 1.7 MB
1960	Lock bypass causes 2 accidents 370.2 KB
1920	Non-Automatic Blocks and Accident Records 4.3 MB
1960	Short track circuit causes accident 436.0 KB
1943	Signals Ordered on the Kansas City Southern 1.4 MB
1924	Wrecks Preventable by Train Control 4.0 MB

acetylene lighting 4

1912	Acetylene Signal Lights on the Boston & Maine 1.3 MB
1917	Flash Lights on the P&R 920.4 KB
1917	Flash-Light crossing signal 906.0 KB
1913	The AGA flashlight a success in Sweden 331.0 KB

Adelaide, South Australia 1

1915	Electric Interlockings in Australia 3.9 MB

Adrian, MI 1

1961	News briefs. 1961-11 1.3 MB

Advance Approach 1

1947	ICC Signal Hearings 179.7 KB

AEI-GRS 1

1965	Rhodesia has 1215 miles of CTC 949.2 KB

aerial cable 1

1935	Aerial Cable Versus Open Line 3.9 MB

Africa 1

1965	Rhodesia has 1215 miles of CTC 949.2 KB

Afton, NY 4

1960	News briefs. 1960-01 1.1 MB
1960	News briefs. 1960-02 995.4 KB
1960	News briefs. 1960-03 1.9 MB
1960	News briefs. 1960-06 1.2 MB

Afton, OK 1

1949	Signaling Saves Time on Frisco 4.8 MB

AGA 3

1917	Flash Lights on the P&R 920.4 KB
1917	Flash-Light crossing signal 906.0 KB
1913	The AGA flashlight a success in Sweden 331.0 KB

Agincourt Yard, Toronto, Ontario 2

1963	News briefs. 1963-03 790.6 KB
1963	News briefs. 1963-05 720.2 KB

Agincourt, Ontario 1

1960	News briefs. 1960-07 845.4 KB

Ailene, VA 1

1963	News briefs. 1963-03 790.6 KB

Airline, IN 1

1952	Interlockings Modernized at Three Railroad Crossings 974.7 KB

Akron, Canton & Youngstown 2

1932	Automatic Plant With Derails 2.4 MB
1964	News briefs. 1964-04 1.3 MB

Akron, CO 1

1947	Burlington Concentrates CTC Control at Division Headquarters 840.8 KB

Akron, OH 3

1963	News briefs. 1963-04 896.6 KB
1965	News briefs. 1965-06 1.2 MB
1909	Union Switch & Signal’s Inspection Trip 1.5 MB

Alabama Great Southern 1

1960	News briefs. 1960-11 875.5 KB

Alazon, NV 1

1925	Signaling of Paired Track Operation 1.3 MB

Albany, NY 5

1959	D&H upgrades crossing protection 626.4 KB
1962	News briefs. 1962-03 1.1 MB
1963	News briefs. 1963-11 1.4 MB
1965	News briefs. 1965-01 2.0 MB
1958	RS&C 50th anniversary: Railroad communications ... from Morse to microwave 3.3 MB

Albert Lea, MN 1

1939	CTC and Automatic Signals on the Rock Island 6.6 MB

Albion, MI 1

1925	News of the Month (July 1925) 680.1 KB

Albion, PA 1

1957	Bessemer takes up second track and installs Centralized Traffic Control 706.4 KB

Albuquerque, NM 1

1961	Santa Fe Signals New Main Line 913.2 KB

Aldene, NJ 2

1964	News briefs. 1964-09 879.4 KB
1964	News briefs. 1964-12 981.5 KB

Aldine, IN 1

1956	Double to Single Track With CTC 7.4 MB

Aldine, TX 1

1963	News briefs. 1963-08 1.2 MB

Alexandria, LA 4

1964	News briefs. 1964-08 811.5 KB
1964	News briefs. 1964-09 879.4 KB
1965	News briefs. 1965-01 2.0 MB
1922	News of the Month. 1922-04 613.8 KB

Alexandria, VA 9

1947	All-Relay Interlockings On the RF&P 1.3 MB
1960	Gangs do signal maintenance 309.7 KB
1958	How to save time when trains are entering yards 513.6 KB
1960	News briefs. 1960-01 1.1 MB
1960	News briefs. 1960-10 1.8 MB
1962	News briefs. 1962-03 1.1 MB
1960	Signal construction steady in 1959 385.2 KB
1951	Signal Modernization Program on the RF&P 1.0 MB
1958	Signaling to cut expenses in '58 411.4 KB

Algoma Central & Hudson Bay 1

1965	News briefs. 1965-06 1.2 MB

Alhambra, CA 2

1962	Automatic Dispatching 2.1 MB
1950	CTC on Sunset Route 3.1 MB

Alix, Alberta 1

1922	News of the Month. 1922-09 562.2 KB

all-relay interlocking 74

1945	A Most Complicated Automatic Interlocking 2.6 MB
1948	All-Relay Interlocking on New Haven 1.2 MB
1936	All-Relay Interlocking On NYC at Syracuse 29.7 MB
1943	All-Relay Interlocking Replaces Mechanical Plant 9.3 MB
1947	All-Relay Interlocking Replaces Mechanical Plant 1.5 MB
1947	All-Relay Interlockings On the RF&P 1.3 MB
1947	All-Relay Plant on the C&EI at Danville, Ill 915.6 KB
1941	All-Relay Signal System Installed on Terminal Railroad of St. Louis 1.2 MB
1955	At Portland Terminal, combined interlocking 810.6 KB
1950	B&O Installs All-Relay Plant 2.6 MB
1951	B&O Installs Modern Interlocking 871.3 KB
1960	British open new class yard 240.4 KB
1943	Canadian National Installs a Large All-Relay Electric Interlocking 8.8 MB
1944	Canadian Pacific Installs Automatic Block Signaling 6.8 MB
1953	Chicago & Western Indiana Installs Easily Manipulated Interlocking 8.1 MB
1952	Chicago's Newest Subway Has Automatic Block Signaling and Train Stop 1.1 MB
1947	Choice of Interlocking Control Machines 266.5 KB
1958	CN consolidates interlockings 2.1 MB
1960	CNR opens Moncton yard 760.9 KB
1958	Compact control center 226.9 KB
1957	Consolidation cuts costs 1.1 MB
1958	CP consolidates interlockings 2.0 MB
1955	CTC enables P&LE to remove fourth main track 515.3 KB
1958	DL&W-Erie joint operation is ready to go 643.6 KB
1947	Drawbridge Interlocking on the Elgin, Joliet & Eastern 647.3 KB
1949	Entrance-Exit Interlocking Installed on Missouri Pacific 3.0 MB
1959	Erie consolidates interlockings 440.6 KB
1958	Improved signaling results from grade elimination 883.1 KB
1956	Interlocking Consolidation: Three Into One in Baltimore 6.8 MB
1958	Interlocking saves time and money for the Belt Railway of Chicago 2.0 MB
1947	Large All-Relay Interlocking on the New York Central 2.5 MB
1957	Lehigh Valley combines interlockings 404.0 KB
1935	Mechanical Plant Replaced by Electric Interlocking 7.2 MB
1947	Modern Interlocking Applied to Ore Transportation 1.1 MB
1951	Modern Interlocking on the Norfolk & Western 710.2 KB
1957	More automation for signaling in 1957 1.2 MB
1947	More CTC on the Burlington 2.0 MB
1944	New All-Relay Interlocking at Providence, RI on the New Haven 5.8 MB
1955	New Cleveland Transit System 917.8 KB
1949	New Interlocking at Chattanooga Terminal 5.2 MB
1949	New Interlocking in Louisville 5.3 MB
1949	New York Central Installs Interlocking 3.3 MB
1944	New York Central Modernizes an Interlocking 5.0 MB
1960	New York City Transit to spend $23 million for signals 189.2 KB
1959	News briefs. 1959-05 506.5 KB
1960	News briefs. 1960-05 1.0 MB
1960	News briefs. 1960-10 1.8 MB
1964	News briefs. 1964-06 812.0 KB
1965	News briefs. 1965-10 1.1 MB
1958	Nine layouts in one interlocking 1.7 MB
1951	On the Baltimore & Ohio New Interlocking Speeds Trains 641.0 KB
1951	P&LE Rebuilds Interlocking 957.2 KB
1943	Pacific Electric Installs a Large All-Relay Interlocking 5.3 MB
1952	Pennsylvania Railroad Installs Large Modern Interlocking at Passenger Station in Philadelphia 1.6 MB
1947	Relay Interlocking on Lehigh Valley 805.7 KB
1931	Remote Control for Interlocking Saves $6,000 Annually 328.9 KB
1951	Remote Control Interlocking Coordinates Train Movements 922.4 KB
1944	Remote Control Interlocking on the D&RGW 4.3 MB
1937	Route Control Interlocking – A New Signaling Development 2.9 MB
1958	RS&C 50th anniversary: Looking ahead 652.9 KB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1951	Signal Modernization Program on the RF&P 1.0 MB
1959	Signaling: 1960 225.2 KB
1933	Simplified Interlocking Installed at the Dayton Terminal 700.6 KB
1941	Southern Pacific Installs Interlocking at Drawbridge 6.3 MB
1958	Subway consolidates interlockings 2.2 MB
1960	Subway trains route themselves 1.2 MB
1949	Texas & Pacific New All-Relay Interlocking 4.3 MB
1947	The New Haven Installs All-Relay Interlocking at Providence, RI 1.9 MB
1955	The Reading has compact control machine for consolidated interlocking 511.5 KB
1957	Two interlockings save time and money 547.8 KB
1954	Wabash Yard Moves Expedited 1.2 MB
1935	Western Indiana Installs All-Relay Interlocking 11.4 MB
1955	Yard operations improved by new interlocking and car retarders 621.2 KB

Alleghany, VA 1

1936	Centralized Traffic Control on the Chesapeake & Ohio 4.3 MB

Allerton, MO 1

1949	Signaling Adapted to Traffic On the Rock Island 5.2 MB

Alliance, NE 2

1951	Burlington Simplifies CTC for Light-Traffic Single Track 1.7 MB
1951	More Signal Construction in 1950 1.0 MB

Alliance, OH 1

1962	News briefs. 1962-08 675.9 KB

Almeda, IN 2

1930	Pennsylvania Installs Centralized Control on 30.3 Miles of Single Track 1.7 MB
1940	Pennsylvania Installs Centralized Traffic Control On 69 Miles of Line 13.1 MB

Alne, England 1

1934	Re-Signaling the London North Eastern of England 3.0 MB

Alsace-Lorraine 1

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

Altamont, WY 1

1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

alternating current signaling 4

1913	Illinois Central Alternating Current Signaling 2.5 MB
1921	New Interlocking on the Boston Elevated 3.3 MB
1916	Reconstruction of New Haven Signals 315.5 KB
1924	Signal Development in Connection With Single Phase Propulsion 5.1 MB

alternating current track circuits 9

1916	AC Signaling for Chicago Terminals 585.7 KB
1917	Light Signals On CM&StP 781.9 KB
1935	New Interlocking in the Chicago Loop 4.0 MB
1922	New Interlocking on the CRR of NJ 734.1 KB
1912	New Scheme of Interurban Automatic Signaling 1.9 MB
1913	New Signaling Across the Great Salt Lake 2.2 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1957	Track circuit developments in Europe 234.8 KB
1960	What's the answer? AC track circuits 281.9 KB

Alto Pass, IL 1

1948	CTC Big Help to GM&O 1.7 MB

Alto Verde, Argentina 1

1960	News briefs. 1960-06 1.2 MB

Alton 12

1937	Alton Uses Spring Switches on Ends of Double Track 5.0 MB
1934	Centralized Traffic Control Installed on the Alton 1.7 MB
1934	Crossing Gate With Light Signals Installed at Railroad Crossing 1.0 MB
1941	Electric Locking With No Derails 735.7 KB
1939	Illinois Central Application Denied 854.7 KB
1941	Interlocking and Automatic Signals on the Alton 3.0 MB
1936	Semaphore Type Crossing Gate Developed on the Alton 8.3 MB
1935	Semi-Automatic Interlocking at a Crossing on the Alton 4.4 MB
1934	Simplified Interlocking Speeds Train Operation 1.9 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1935	The Railways' Answer to the Demand for Speed 2.8 MB
1936	Train Control on the B&O Diesel 2.6 MB

Alton & Southern 5

1934	Automatic Plant Replaces Mechanical Interlocking on Alton & Southern 1.2 MB
1960	News briefs. 1960-03 1.9 MB
1963	News briefs. 1963-03 790.6 KB
1964	News briefs. 1964-02 992.4 KB
1964	News briefs. 1964-07 833.0 KB

Alton, IL 1

1941	Interlocking and Automatic Signals on the Alton 3.0 MB

Alum Creek, OH 1

1945	Extensive All-Relay Interlocking Features Plug-In Relays 5.6 MB

Amarillo, TX 4

1922	A Swing Rail Crossing 557.8 KB
1961	Check Switch Heaters Now 297.3 KB
1961	News briefs. 1961-12 978.0 KB
1962	News briefs. 1962-01 986.8 KB

amateur radio 1

1947	Illinois Central Honors Radio “Hams” for Emergency Services 278.0 KB

American Railway Association 11

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. 1922-08 394.0 KB
1922	News of the Month. 1922-09 562.2 KB
1922	News of the Month. 1922-10 368.4 KB
1922	Railroads Argue Against Automatic Stops at ICC Hearing 436.8 KB
1911	Railway Signal Association Convention: Committee I: Signaling Practice 3.8 MB
1933	Signaling Construction During 1932 632.3 KB

American Railway Engineering Association 1

1931	Report of A.R.E.A. on Crossing Signals 246.6 KB

American Society of Mechanical Engineers 1

1963	Automated Rail Transit Discussed by IEEE-ASME 315.3 KB

American Train Control 1

1922	Automatic Train Control in Use On American Railroads 353.7 KB

American Transit Association 1

1965	AFO circuits can be used in subways 676.7 KB

Americus, GA 1

1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Ames, GA 1

1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Ames, NE 1

1937	Color Light Signals Replace Semaphores on Union Pacific 4.2 MB

ammeter 1

1940	Hook-On Volt-Ammeter 1.3 MB

Amory, MS 2

1965	Merging divisions require changing circuits 335.5 KB
1962	Trains Control Automatic Bridge 1.2 MB

Amqui, TN 3

1936	Electric Lighting of Semaphores 867.6 KB
1939	Electric Lights for Semaphores 1.9 MB
1951	More Signal Construction in 1950 1.0 MB

Amsterdam, NY 1

1944	New York Central Installs Coded Track Circuits 3.9 MB

Anacostia & Potomac River 1

1909	Electric interlocking at C St. and Delaware Ave., Washington, DC 1.4 MB

Anaheim, CA 1

1959	Monorail is signaled electronically 573.9 KB

Anapra, NM 2

1959	News briefs. 1959-05 506.5 KB
1959	Pushbutton console for CTC 785.3 KB

Anchorage, LA 1

1963	News briefs. 1963-08 1.2 MB

Andover, CT 1

1922	Flashlight Crossing Signal 280.8 KB

Angola, NY 1

1955	News briefs. 1955-08 830.4 KB

Ann Arbor 2

1922	News of the Month. 1922-11 361.5 KB
1922	News of the Month. 1922-12 388.1 KB

Annandale, MN 1

1922	News of the Month. 1922-09 562.2 KB

annual signaling statistics 1

1944	ICC Annual Signaling Statistics 6.6 MB

annunciator 1

1936	Annunciator Circuits 2.6 MB

annunciator control 1

1950	Retained-Neutral Neutral Relay 3.4 MB

Anoka, IN 1

1940	11,000-Ft. Coded Track Circuits 13.6 MB

application for signaling changes 1

1937	Applications for Signaling Changes 1937-12 2.7 MB

approach indications 2

1950	Approach Distances and Times 5.5 MB
1937	Approach Indications to Train Order Signals 4.2 MB

approach lighting 14

1927	Approach Signal Lighting vs. Constant Burning 410.8 KB
1935	Checking Signal Lamps 3.3 MB
1947	CTC Down by the Ohio 2.7 MB
1930	Directional Control and Approach Lighting 523.4 KB
1943	Modernization of Automatic Signaling On the New York Central 9.8 MB
1928	Obituary: Frank P. Patenall 627.0 KB
1950	Retained-Neutral Neutral Relay 3.4 MB
1922	Signal Construction on the Santa Fe 797.6 KB
1944	Signaling Modernized On the Pittsburgh & Lake Erie 4.7 MB
1936	The Delaware, Lackawanna & Western's Approach-Lighting System for Semaphore Signals 3.4 MB
1946	The User of Signaling 895.2 KB
1965	What's the Answer? 1965-06 235.3 KB
1958	What's the answer? Approach lighting 236.9 KB
1958	What's the answer? Approach lighting 237.1 KB

approach locking 8

1950	Approach Distances and Times 5.5 MB
1937	Approach Locking on Dwarf Signals 1.2 MB
1943	Approach or Time Locking 897.5 KB
1943	Centralized Traffic Control Installed on 39 Miles of the Burlington 6.1 MB
1956	CTC Locking 2.2 MB
1950	Retained-Neutral Neutral Relay 3.4 MB
1911	Summary of Recent Progress in Signaling 4.4 MB
1958	What's the answer? CTC locking 269.2 KB

Arapahoe, NE 2

1922	News of the Month. 1922-07 360.7 KB
1922	News of the Month. 1922-10 368.4 KB

Arbuckle, OK 1

1922	Signal Construction on the Santa Fe 797.6 KB

Arcadia, OH 3

1947	Annual Review and Outlook 425.1 KB
1928	Nickel Plate Installs 169 Miles of Color Light Automatics 3.6 MB
1949	Train Operation By Signal Inidication Used Extensively on the Nickel Plate 6.1 MB

Arcola, IL 2

1940	Panama Limited Collides With Louisiane 1.0 MB
1940	Two Accidents on the Illinois Central 2.8 MB

Arenzville, IL 1

1929	Centralized Control Used for Ends of Double Track 2.1 MB

Argentina 3

1932	Electro-Pneumatic Interlocking With Optical Route Indicators in the New Buenos Aires Terminal 715.1 KB
1922	Interlockings in Argentine Terminal 473.1 KB
1922	Locking Arrangement for Movable Point Crossing Frogs 527.0 KB

Argentine State Railways 1

1960	News briefs. 1960-06 1.2 MB

Arkansas City, KS 1

1955	Santa Fe installs CTC on single track 610.2 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

Arlington, NC 2

1965	News briefs. 1965-08 749.4 KB
1966	News briefs. 1966-01 1.4 MB

Arlington, OH 1

1932	Automatic Plant With Derails 2.4 MB

Armitage and Sheffield Avenues, Chicago, IL 1

1944	Automatic Signaling, Train Stop, and Route Interlocking Installed in the Chicago Subways 8.6 MB

Armstrong, Ontario 2

1960	News briefs. 1960-01 1.1 MB
1964	News briefs. 1964-01 535.9 KB

Armstrong, Saskatchewan 1

1964	News briefs. 1964-01 535.9 KB

Art Institute of Chicago 1

1965	Crossing protection gets new look 490.1 KB

Ash Fork, AZ 2

1961	News briefs. 1961-06 725.8 KB
1961	Santa Fe Signals New Main Line 913.2 KB

Ash St., IL 1

1913	Illinois Central Alternating Current Signaling 2.5 MB

Ashburn, Chicago, IL 2

1940	Gates, Signals and Traffic Lights at a Wabash Crossing 6.8 MB
1940	Interlockings Installed at Two Crossings 6.5 MB

Ashford, NY 1

1962	News briefs. 1962-02 1.4 MB

Ashkum, IL 2

1939	Automatic Gates on the Illinois Central 3.3 MB
1923	News of the Month. 1923-07 1.9 MB

Ashland, KY 2

1927	C&O Completes Three-Track Color-Light, Either-Direction Signaling 3.9 MB
1957	One Machine Controls Two Plants 2.2 MB

Ashland, NE 2

1955	CTC on single and double track 406.8 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Ashtabula, OH 3

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

aspects and indications 31

1911	A Summary of Signaling Practice 3.6 MB
1959	Burlington installs modified CTC 1.0 MB
1958	CN consolidates interlockings 2.1 MB
1955	CTC and cab signaling on Union Pacific 789.5 KB
1955	CTC enables P&LE to remove fourth main track 515.3 KB
1915	First Position Light Signal Installation 580.6 KB
1960	From the field 945.2 KB
1938	Fundamental Aspects 651.0 KB
1957	How long sidings save train time 465.2 KB
1958	How to adapt CTC to your traffic 748.3 KB
1957	How to make non-stop meet with CTC 576.9 KB
1955	How to run reverse temporarily 197.6 KB
1955	Much is new in signaling for 1955 826.7 KB
1955	New Cleveland Transit System 917.8 KB
1951	New Interlocking in Holland 1.0 MB
1916	New York Central and Pennsylvania Change Colors 220.3 KB
1951	P&LE Rebuilds Interlocking 957.2 KB
1911	Railway Signal Association Convention: Committee I: Signaling Practice 3.8 MB
1937	Report of Committee X – Signaling Practice 2.9 MB
1959	Santa Fe CTCs double track line 2.2 MB
1955	Santa Fe installs CTC on single track 610.2 KB
1916	Service Record of Position-Light Signals 580.8 KB
1913	Settled at Last 824.8 KB
1951	Signal Modernization Program on the RF&P 1.0 MB
1951	Single-Track With CTC Handles 40 Trains Daily 530.8 KB
1947	Speed Indicators for High-Speed Turnouts 298.4 KB
1958	Subway consolidates interlockings 2.2 MB
1935	The Rudd-Rhea Signaling Report of the Pennsylvania 9.7 MB
1957	Two interlockings save time and money 547.8 KB
1957	What's the Answer: Spring switches? 200.0 KB
1957	Why Cotton Belt installed CTC on entire main line 914.0 KB

Aspen, WY 1

1956	Union Pacific Installs Protection For Motor Cars at Tunnels 3.2 MB

Aspinwall, PA 1

1924	New Plant on the Pennsylvania 3.1 MB

Association of American Railroads 7

1965	AAR and RLEA reply to RS&I exceptions 858.7 KB
1965	AAR excepts to 3 rule changes 639.3 KB
1965	Crossing protection gets new look 490.1 KB
1959	Grade crossing funds debated 242.0 KB
1964	ICC Proposes RS&I Changes 2.3 MB
1958	Split-channel radio 649.4 KB
1957	Track circuit developments in Europe 234.8 KB

Atchison, KS 1

1962	News briefs. 1962-09 838.3 KB

Atchison, Topeka & Santa Fe 132

1922	A Swing Rail Crossing 557.8 KB
1920	A Train Sign Used As an Indicator 258.9 KB
1929	Adjustment of Clockwork Time Releases 1.4 MB
1914	All Electric Interlocking at Joliet 1.5 MB
1951	Approach Train Indicators 402.6 KB
1926	Are Smash-Boards Necessary at Automatic Crossing Plants? 816.3 KB
1950	Automatic Block Increases Safety on Paired Trackage 4.6 MB
1935	Automatic Interlocking Involves Highway Crossing Signals 3.4 MB
1935	Automatic Interlockings of Two Junctions Involving Spring Switches 8.9 MB
1934	Automatic Interlockings on the Santa Fe 2.2 MB
1927	Can Cab Signaling Be Relied Upon Exclusively? 989.8 KB
1941	Carrier Communication Equipment Installed on the Santa Fe 4.7 MB
1934	Centralized Traffic Control Installed on the Alton 1.7 MB
1932	Centralized Traffic Control Saves Time on the Santa Fe 2.6 MB
1938	Changing Relays 1.7 MB
1961	Check Switch Heaters Now 297.3 KB
1928	Color Light Train Order Signals Are Effective 2.9 MB
1956	Conelrad – A Civil Defense Measure … How Some Railroads are Participating 4.1 MB
1939	Contact Pitting 1.6 MB
1928	Continued Activity and Development in Signaling 1.1 MB
1947	CTC Has Long Sidings With Signals on the Santa Fe 2.1 MB
1956	CTC Signs 1.8 MB
1945	CTC West of the Pecos On the Santa Fe 4.6 MB
1936	Demands for Modern Signaling 12.1 MB
1929	Detector Locking Should Not Have an Emergency Release 1.3 MB
1937	Electric Switch Lamps on the Santa Fe 4.5 MB
1928	Emergency Release Circuits 2.4 MB
1950	Flashing Signal Aspects 1.1 MB
1960	From the field 945.2 KB
1956	Gate Arm Stripes 1.3 MB
1957	How to make non-stop meet with CTC 576.9 KB
1946	ICC 50-MPH Signal Hearing 6.9 MB
1947	ICC Holds Signal Hearing 507.5 KB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1936	Importance of Warning Whistle 6.8 MB
1956	Interlocking Relays 3.9 MB
1953	Location of Signal Heads 624.7 KB
1936	Maintainers' Blueprint Plans 4.2 MB
1950	Microwaves on Railroads 1.3 MB
1939	Mission Tower Interlocking at Los Angeles 9.2 MB
1957	More automation for signaling in 1957 1.2 MB
1927	More Discussion on Approach Lighting 495.0 KB
1951	More Signal Construction in 1950 1.0 MB
1936	Motor Car Indicators 2.9 MB
1922	Moving Day 255.2 KB
1939	New Interlocking at Los Angeles 9.6 MB
1917	New Plant in Chicago Terminal District 591.7 KB
1956	New Three-Track Interchange Includes Interlocking and Talk-Backs 8.9 MB
1955	News briefs. 1955-08 830.4 KB
1960	News briefs. 1960-05 1.0 MB
1960	News briefs. 1960-06 1.2 MB
1960	News briefs. 1960-10 1.8 MB
1961	News briefs. 1961-06 725.8 KB
1961	News briefs. 1961-12 978.0 KB
1962	News briefs. 1962-01 986.8 KB
1962	News briefs. 1962-02 1.4 MB
1962	News briefs. 1962-06 989.1 KB
1962	News briefs. 1962-09 838.3 KB
1963	News briefs. 1963-01 951.3 KB
1963	News briefs. 1963-08 1.2 MB
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. 1965-07 788.3 KB
1922	News of the Month. 1922-01 315.5 KB
1922	News of the Month. 1922-04 613.8 KB
1922	News of the Month. 1922-09 562.2 KB
1922	News of the Month. 1922-10 368.4 KB
1956	No Waiting for Reservations 6.3 MB
1941	Non-Stop Permissive Signals 1.4 MB
1931	Oil or Electric Switch Lamps? 1.8 MB
1939	Operation by Signal Indication on Single Track 846.7 KB
1927	Organization of Railroad Signal Departments 3.9 MB
1956	Photography 1.5 MB
1935	Pole Lines for Automatic Signaling 1.6 MB
1922	Railroads Argue Against Automatic Stops at ICC Hearing 436.8 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1941	Railway Exhibit Presented to Museum of Science and Industry 636.5 KB
1911	Railway Signal Association Convention: Committee I: Signaling Practice 3.8 MB
1933	Reducing Unnecessary Train Stops 2.5 MB
1936	Relay Shipment Container 2.0 MB
1956	Release of Locking 3.7 MB
1937	Replacement and Life of Lamps 3.0 MB
1930	Report of Committee I – Economics of Signaling 2.5 MB
1925	Report on Economics of Signaling 606.1 KB
1958	RS&C 50th anniversary: Railroad communications ... from Morse to microwave 3.3 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1935	Safety of High Speed Trains 5.2 MB
1959	Santa Fe CTCs double track line 2.2 MB
1949	Santa Fe Gets Some Relief from ICC Signaling Order 2.2 MB
1928	Santa Fe Governs High Speed Main-Line Movements with Dwarf Signal 502.9 KB
1944	Santa Fe Installs CTC on 115.6 Miles Los Angeles to San Diego 7.2 MB
1955	Santa Fe installs CTC on single track 610.2 KB
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
1961	Santa Fe Signals New Main Line 913.2 KB
1958	Santa Fe tests AF track circuits 1.6 MB
1929	Secure New Ordinances for Changes in Crossing Protection 691.4 KB
1937	Selection of Routes at Automatic Interlockings 1.4 MB
1913	Settled at Last 824.8 KB
1928	Should Call-On Arms Be Used? 1.0 MB
1930	Signal Aspects for a Four Block System 2.8 MB
1922	Signal Construction on the Santa Fe 797.6 KB
1960	Signal construction steady in 1959 385.2 KB
1956	Signal Lamp Test 1.4 MB
1933	Signaling Construction During 1932 632.3 KB
1960	Signaling enters automation 630.7 KB
1935	Signaling in Dust Storms 2.3 MB
1959	Signaling moderate during '58 528.6 KB
1947	Signaling Order Issued by ICC 533.4 KB
1956	Snow Melters 2.6 MB
1947	Speed Indicators for High-Speed Turnouts 298.4 KB
1950	Temporary Change of Signal Controls 2.2 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1939	Testing Automatic Signal Controls 950.8 KB
1936	Testing New Interlocking 3.5 MB
1925	The Train Control Situation 853.0 KB
1934	Thomas S. Stevens (obituary) 440.9 KB
1939	Track Relay Release Time 1.6 MB
1935	Traffic Type Signals for Protection of Highway-Railroad Crossings 2.5 MB
1926	Train Control Progress in 1925 3.1 MB
1954	Train Operations When CTC Fails 2.0 MB
1937	Train Shunt at Automatic Plants 1.2 MB
1916	TRAIN signs on the Santa Fe 258.1 KB
1928	Train Signs or Indicators 468.2 KB
1956	Training Program 2.1 MB
1934	Use of Dwarf Calling-On Signals 1.0 MB
1957	What's the answer: Slotting relay? 361.2 KB
1960	What's the answer? AC track circuits 281.9 KB
1955	What's the Answer? CTC Into Service 409.5 KB
1931	Why Not Eliminate Train Stops at Permissive Wayside Signals 763.1 KB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

Athens, AL 2

1961	News briefs. 1961-01 761.9 KB
1963	News briefs. 1963-03 790.6 KB

Athens, GA 1

1960	News briefs. 1960-11 875.5 KB

Atherton, IN 1

1948	CTC Keeps ‘em Rollin’ on C&EI 2.1 MB

Athol, IL 5

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. 1963-11 1.4 MB
1964	News briefs. 1964-02 992.4 KB

Atikokan, Ontario 1

1955	How CN increased track capacity 516.4 KB

Atkinson, IL 3

1944	Coded Track Circuits for CTC and Cab Signaling 4.0 MB
1944	Rock Island Installs Cab Signaling and Centralized Traffic Control 10.0 MB
1949	Signaling Adapted to Traffic On the Rock Island 5.2 MB

Atlanta & West Point 1

1922	News of the Month. 1922-08 394.0 KB

Atlanta Terminal 1

1950	Double to Single Track with Remote Control 4.2 MB

Atlanta, GA 10

1947	Automatic Block With Spring Switches installed on the Georgia Railroad 851.4 KB
1950	Big NX Interlocking at Atlanta 6.3 MB
1957	More automation for signaling in 1957 1.2 MB
1928	NC&StL Completes Signaling from Nashville to Atlanta, 288 Miles 3.3 MB
1961	News briefs. 1961-04 1.5 MB
1964	News briefs. 1964-08 811.5 KB
1964	News briefs. 1964-10 768.6 KB
1965	News briefs. 1965-01 2.0 MB
1959	Signaling moderate during '58 528.6 KB
1955	What CTC did for the Dixie Line 889.8 KB

Atlantic City, NJ 3

1922	ICC Report on Winslow Junction Accident 416.7 KB
1922	News of the Month. 1922-07 360.7 KB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

Atlantic Coast Line 50

1947	Annual Review and Outlook 425.1 KB
1928	Are Call-On Signals Safe? 1.2 MB
1933	Are Switch Lamps Needed? 506.3 KB
1931	Call-on Route Control 1.4 MB
1935	Checking Rail Ends on Drawbridges 2.5 MB
1927	Checking Up on Signal Observance 774.5 KB
1949	Coast Line Replaces Signaling On Engine District 8.1 MB
1928	Color Light Train Order Signals Are Effective 2.9 MB
1935	False Operation of Crossing Signals 955.2 KB
1935	False Operation of Crossing Signals 3.3 MB
1956	Gates at 21 Crossings 6.6 MB
1946	ICC 50-MPH Signal Hearing 6.9 MB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1935	Installation of Bond Wires 4.0 MB
1938	Light Signals as Train Order Signals 731.0 KB
1949	Main Line Crossovers 2.4 MB
1935	Maintainers' Tool Houses 3.5 MB
1929	Mechanical Selector for Interlocker 361.4 KB
1921	New Interlockings at Jacksonville Terminal 3.4 MB
1955	News briefs. 1955-08 830.4 KB
1959	News briefs. 1959-05 506.5 KB
1960	News briefs. 1960-01 1.1 MB
1961	News briefs. 1961-04 1.5 MB
1961	News briefs. 1961-12 978.0 KB
1962	News briefs. 1962-02 1.4 MB
1962	News briefs. 1962-05 826.8 KB
1962	News briefs. 1962-06 989.1 KB
1963	News briefs. 1963-01 951.3 KB
1963	News briefs. 1963-04 896.6 KB
1963	News briefs. 1963-05 720.2 KB
1964	News briefs. 1964-02 992.4 KB
1964	News briefs. 1964-05 1.0 MB
1964	News briefs. 1964-07 833.0 KB
1964	News briefs. 1964-10 768.6 KB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-07 788.3 KB
1931	Precision-Base Lamps 1.4 MB
1922	Railroads Argue Against Automatic Stops at ICC Hearing 436.8 KB
1929	Rear-End Flagging 745.4 KB
1933	Replacing Semaphores 997.0 KB
1926	Semaphore or Light Signals? 1.4 MB
1951	Signal Modernization Program on the RF&P 1.0 MB
1935	Standardization of Circuit Plans for Highway Crossing Signals 4.5 MB
1961	Survey Tells How Railroads Use Hotbox Detectors 1.8 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1925	The Train Control Situation 853.0 KB
1924	Three Train Control Contracts Let 1.9 MB
1926	Train Control Progress in 1925 3.1 MB
1950	Unusual Trouble 3.0 MB
1965	What's the Answer? 1965-06 235.3 KB

atomic lamps 1

1959	What’s the answer? Atomic lamps. 1959-12 194.6 KB

Attica, NY 1

1951	Double to Single Track 60 Miles on the Erie 1.1 MB

Atwater, MN 2

1934	Ends of Double Track Equipped With Automatic Interlocking 987.5 KB
1957	GN CTC's 175 miles of mainline 635.9 KB

Atwood, CA 1

1922	Signal Construction on the Santa Fe 797.6 KB

Auburn, IA 1

1951	Automatic Block for Few Fast Trains 286.5 KB

Auburn, IL 2

1960	Crossings are safer after 10 years 454.4 KB
1918	New Mechanical Plant on Chicago & Alton 702.8 KB

audio frequency overlay 3

1964	AFO can solve highway crossing problems 1.9 MB
1965	AFO circuits can be used in subways 676.7 KB
1958	Santa Fe tests AF track circuits 1.6 MB

audio frequency overlay track circuits 3

1959	AFO circuits protect crossing 554.0 KB
1957	Bessemer takes up second track and installs Centralized Traffic Control 706.4 KB
1960	News briefs. 1960-07 845.4 KB

audio frequency track circuits 6

1962	Electronic Track Circuits 740.3 KB
1965	News briefs. 1965-07 788.3 KB
1965	News briefs. 1965-11 1.2 MB
1964	San Francisco will test four ATO systems 1.4 MB
1958	Santa Fe tests AF track circuits 1.6 MB
1959	Signaling moderate during '58 528.6 KB

Augusta, GA 1

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

Aulon, TN 2

1915	Electric Interlocking at Aulon, Tennessee 882.6 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB

Aurant, CA 1

1950	CTC on Sunset Route 3.1 MB

Aurora, Elgin & Chicago 1

1917	Wigwag signals on an Electric Line 239.2 KB

Aurora, IA 1

1911	Automatic Signals on the Chicago Great Western 7.4 MB

Aurora, IL 19

1928	Burlington Completes Automatic Signals Chicago to Denver 5.1 MB
1931	Burlington Develops Signal Repair Shop at Aurora, IL 370.9 KB
1956	Burlington Has Compact Control Machine for Consolidation of 14 Interlockings 11.3 MB
1925	CB&Q Plant Has Novel Features 5.5 MB
1943	Centralized Traffic Control Installed on 39 Miles of the Burlington 6.1 MB
1926	Color Light Signal and A.C. Floating Change-Over on the Burlington 1.9 MB
1929	Maintenance Tests at Burlington Interlocker 1.2 MB
1957	More automation for signaling in 1957 1.2 MB
1947	More CTC on the Burlington 2.0 MB
1951	More Signal Construction in 1950 1.0 MB
1954	New Wayside and Cab Signaling 753.2 KB
1964	News briefs. 1964-02 992.4 KB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-09 381.8 KB
1922	News of the Month. 1922-06 516.2 KB
1922	News of the Month. 1922-07 360.7 KB
1958	RS&C 50th anniversary: Railroad communications ... from Morse to microwave 3.3 MB
1935	Safety of High Speed Trains 5.2 MB
1935	Signaling for Higher Train Speeds 3.0 MB

Aurora, MO 1

1922	News of the Month. 1922-07 360.7 KB

Austin, MN 2

1938	CTC Replaces Staff System on the Milwaukee 2.3 MB
1938	Highway Crossing Protection and Spring Switch on Milwaukee 3.2 MB

Australia 3

1922	News of the Month. 1922-07 360.7 KB
1922	News of the Month. 1922-11 361.5 KB
1922	Single Track Signaling in Australia 527.7 KB

Austria 1

1937	Electric Signal Lights in Austria 1.2 MB

auto-stop barriers 1

1935	Auto Stop Installed on C&NW 7.2 MB

automated rail 1

1958	RS&C 50th anniversary: Looking ahead 652.9 KB

automated rail transit 1

1963	Automated Rail Transit Discussed by IEEE-ASME 315.3 KB

automated subway 2

1963	Automated Rail Transit Discussed by IEEE-ASME 315.3 KB
1961	News briefs. 1961-11 1.3 MB

automated subway trains 1

1959	Signaling: 1960 225.2 KB

automated train operation 3

1960	Automation on the Russian railroads 695.9 KB
1964	San Francisco will test four ATO systems 1.4 MB
1960	Subway train is automatic 552.2 KB

automated trains 1

1961	News briefs. 1961-05 1.1 MB

automatic block signaling 253

1940	11,000-Ft. Coded Track Circuits 13.6 MB
1939	A Message of Confidence 741.8 KB
1940	A Review of 1939 and a Glance Into 1940 1.6 MB
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
1921	Absolute Permissive Block Signal System 1.2 MB
1916	AC Signaling for Chicago Terminals 585.7 KB
1916	AC Signaling in the Centre Street Loop 924.9 KB
1936	Accident in Automatic Block Signal Territory 4.7 MB
1943	Accident Involves Signaling 1.0 MB
1938	Adapting Signaling to Requirements 1.7 MB
1935	Aerial Cable Versus Open Line 3.9 MB
1947	All-Relay Interlockings On the RF&P 1.3 MB
1937	Alton Uses Spring Switches on Ends of Double Track 5.0 MB
1947	Annual Review and Outlook 425.1 KB
1937	APB, Remote Control, and CTC on the Baltimore & Ohio 11.9 MB
1950	Approach Distances and Times 5.5 MB
1937	Approach Indications to Train Order Signals 4.2 MB
1941	Automatic Block and Centralized Traffic Control on the Chesapeake & Ohio 4.3 MB
1951	Automatic Block for Few Fast Trains 286.5 KB
1950	Automatic Block Increases Safety on Paired Trackage 4.6 MB
1911	Automatic Block Signal System for Electric Railways 4.9 MB
1947	Automatic Block With Spring Switches installed on the Georgia Railroad 851.4 KB
1946	Automatic Block With Spring Switches on the Central of Georgia 5.3 MB
1951	Automatic Block Without Line Wires on the Kansas City Southern 723.0 KB
1933	Automatic Dwarfs? 717.9 KB
1941	Automatic Signaling and Tunnel Protection On the Denver & Salt Lake 6.7 MB
1943	Automatic Signaling Installed On the Wabash 5.3 MB
1947	Automatic Signaling With Spring Switches Installed on the Great Northern 734.1 KB
1944	Automatic Signaling, Train Stop, and Route Interlocking Installed in the Chicago Subways 8.6 MB
1937	Automatic Signals on Litchfield & Madison 3.5 MB
1911	Automatic Signals on the Chicago Great Western 7.4 MB
1911	Automatic Signals on the Northern Pacific 7.2 MB
1911	Automatic Signals on the Northern Pacific 6.3 MB
1911	Automatic Signals on Vermillion River Bridge 986.3 KB
1941	Automatics Installed on North Shore 1.6 MB
1923	Automatics on Paris Grande Ceinture 5.0 MB
1959	B&M takes up track and installs traffic control, gates and flashers 745.0 KB
1967	Block signal systems 2.0 MB
1917	Block Signals on the Monon 675.3 KB
1937	Broken Rails 1.1 MB
1951	Burlington Simplifies CTC for Light-Traffic Single Track 1.7 MB
1946	Burlington Tests Show Signals Adequate 1.3 MB
1935	Call-on Signal Involved In Accident 1.1 MB
1947	Canadian Pacific Installs Absolute Permissive Block 774.8 KB
1944	Canadian Pacific Installs Automatic Block Signaling 6.8 MB
1940	Centralized Traffic Control Solves Problem on the Norfolk & Western 7.5 MB
1943	Change-Over Circuits 739.0 KB
1952	Chicago's Newest Subway Has Automatic Block Signaling and Train Stop 1.1 MB
1951	Circuits for Crossovers on the Baltimore & Ohio 215.2 KB
1960	CNR uses speed selection for gates 980.7 KB
1935	Coded Track Circuit Signaling on the Pennsylvania 9.8 MB
1944	Continuity of CTC Operation 943.3 KB
1949	Controlled Overlaps for Single-Track APB Signaling 1.5 MB
1939	Controlling Four-Aspect Automatics 1.6 MB
1947	Crossover protection on the GM&O 2.6 MB
1939	CTC and Automatic Signals on the Rock Island 6.6 MB
1959	CTC discussed at AIEE meeting 445.2 KB
1949	CTC Increases Capacity of Single-Track Freight Line Handling Heavy Traffic 6.1 MB
1955	CTC on single and double track 406.8 KB
1943	CTC on the Bessemer & Lake Erie 8.7 MB
1946	CTC Over Automatic Block 443.6 KB
1951	Cut-Out Controls for Crossing Gates 488.0 KB
1950	Differentiation Between Signals 1.1 MB
1950	Differentiation Between Signals 955.8 KB
1924	Drafting Practice on Interborough 2.9 MB
1910	Drafting Room Practice in the Signal Department 1.3 MB
1915	Duluth Terminal Trestle Signaling 2.3 MB
1922	Economy in Automatic Signal Operation as Effected by Design 376.2 KB
1943	Electric Interlocking Installed On IC 12.8 MB
1936	Electric Lighting of Semaphores 867.6 KB
1939	Electric Lights for Semaphores 1.9 MB
1936	Electric Lights for Semaphores and Train Approach Indicators on the Rock Island 8.9 MB
1962	Electric Switch Lamp Lighting Helps Reduce Operating Expense 661.7 KB
1940	Entering the Main Line 1.3 MB
1960	Erie installs its first hotbox detector 462.1 KB
1915	Extension of New Haven signals 684.8 KB
1909	First Annual Report of the Block Signal and Train Control Board to the Interstate Commerce Commission 4.0 MB
1941	Flashing Yellow as a Fourth Aspect on the IC 2.6 MB
1916	Government Drawbridge Signaling 670.2 KB
1950	Grade Signal Controls 2.1 MB
1947	Hoosac Tunnel Interlocking and CTC 1.7 MB
1959	Hot box detector sets signals 1.2 MB
1958	How to adapt CTC to your traffic 748.3 KB
1957	How to make non-stop meet with CTC 576.9 KB
1946	ICC 50-MPH Signal Hearing 6.9 MB
1944	ICC Annual Signaling Statistics 6.6 MB
1949	ICC Issues Statistics 850.7 KB
1961	ICC Reports on Railroad Safety 194.7 KB
1947	ICC Signal Hearings 179.7 KB
1946	ICC Signaling Investigation 770.4 KB
1937	Interlocking and Signaling For New Bridge at New Orleans 5.9 MB
1908	Interlocking Facilities of the St. Louis Terminal Railroad Assn. of St. Louis 7.2 MB
1940	Intermediate Signal Spacing and Control 2.1 MB
1939	Intermediate Signals and Approach Aspects 2.3 MB
1911	Interurban Block Signals 1.7 MB
1937	Location of Signals at Spring Switches 1.3 MB
1916	Methods of Locating Automatic Signals 428.3 KB
1949	Milwaukee Installs Automatic Block 8.2 MB
1947	Milwaukee Installs Block System on 98 Miles 1.2 MB
1941	Monon Changes Approved 760.8 KB
1959	Monorail is signaled electronically 573.9 KB
1951	More Signal Construction in 1950 1.0 MB
1955	Much is new in signaling for 1955 826.7 KB
1935	Multiple-Block Signaling 7.0 MB
1949	New Automatic Block on the Katy 4.7 MB
1940	New Automatic Block Signaling on the Milwaukee 6.3 MB
1935	New Automatic Signals Increase Track Capacity and Safety on the Erie 6.4 MB
1916	New Automatic Signals on Grand Trunk 997.0 KB
1937	New Automatics on the C&O 5.0 MB
1913	New Block Signaling on the North-Western 1.8 MB
1955	New Cleveland Transit System 917.8 KB
1943	New Haven Installs Five-Aspect Signaling Controlled By Coded Track Circuits 7.4 MB
1924	New Interlocking Construction Ideas 3.4 MB
1951	New NYC Interlocking Controlled by Synchrostep 1.2 MB
1950	New Rules, Standards and Instructions Issued by the Interstate Commerce Commission 7.9 MB
1912	New Scheme of Interurban Automatic Signaling 1.9 MB
1948	New Signaling In Texas on Missouri Pacific Lines 1.8 MB
1935	New Signaling on the Boston & Maine 9.9 MB
1940	New Signaling on the Wabash 8.1 MB
1912	New Single Track Signals on the Lake Shore 283.2 KB
1944	New York Central Installs Coded Track Circuits 3.9 MB
1960	New York City Transit to spend $23 million for signals 189.2 KB
1924	New York Commission Recalls Order 3.3 MB
1955	News briefs. 1955-08 830.4 KB
1958	News briefs. 1958-01 1.8 MB
1959	News briefs. 1959-05 506.5 KB
1960	News briefs. 1960-01 1.1 MB
1960	News briefs. 1960-02 995.4 KB
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. 1960-08 603.8 KB
1960	News briefs. 1960-09 756.9 KB
1960	News briefs. 1960-10 1.8 MB
1961	News briefs. 1961-02 1.4 MB
1961	News briefs. 1961-03 1.0 MB
1961	News briefs. 1961-04 1.5 MB
1961	News briefs. 1961-05 1.1 MB
1961	News briefs. 1961-07 648.9 KB
1961	News briefs. 1961-10 1.0 MB
1962	News briefs. 1962-01 986.8 KB
1962	News briefs. 1962-02 1.4 MB
1962	News briefs. 1962-04 1.2 MB
1962	News briefs. 1962-07 494.2 KB
1962	News briefs. 1962-10 461.7 KB
1963	News briefs. 1963-03 790.6 KB
1963	News briefs. 1963-05 720.2 KB
1963	News briefs. 1963-06 961.3 KB
1963	News briefs. 1963-08 1.2 MB
1963	News briefs. 1963-11 1.4 MB
1964	News briefs. 1964-05 1.0 MB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-04 1.5 MB
1965	News briefs. 1965-08 749.4 KB
1965	News briefs. 1965-10 1.1 MB
1966	News briefs. 1966-01 1.4 MB
1922	News of the Month. 1922-01 315.5 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. 1922-07 360.7 KB
1922	News of the Month. 1922-08 394.0 KB
1922	News of the Month. 1922-10 368.4 KB
1938	Non-Stop Permissive Automatic Signals 1.4 MB
1941	Non-Stop Permissive Signals 2.8 MB
1941	Non-Stop Permissive Signals 1.4 MB
1938	North Shore Installs Automatics 3.9 MB
1958	One track does work of two 521.4 KB
1939	Operation by Signal Indication on Single Track 846.7 KB
1959	P&LE installs multiple track CTC 1.1 MB
1955	Pennsylvania installs wayside equipment for cab signaling 745.7 KB
1935	Pole Lines for Automatic Signaling 1.6 MB
1951	Power Switches and Spring Swiches in CTC on the Frisco 1.2 MB
1939	Problems of Four-Indication Signaling 1.6 MB
1940	Proceeding By a Head-Block Signal 1.9 MB
1921	Proposed Modification of Stop-and-Proceed Rule 1.4 MB
1936	Railroads Clean Up After Flood Waters 33.3 MB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1950	Remote Control of Center Sidings On Busy Double-Track Line 3.6 MB
1936	Replacing Semaphores With Position Light Signals On the Norfolk & Western 7.9 MB
1908	Reporting System of the Illinois Central Railroad 1.3 MB
1935	Respacing Automatics on the Pennsylvania 1.8 MB
1946	Reverse Running on the Pennsylvania 2.8 MB
1932	Reverting to Single Track 646.7 KB
1937	Rock Island Installs Automatic Blocks 10.1 MB
1924	Rock Island Installs Train Control 847.9 KB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1941	Rule 204 1.7 MB
1950	Rules, Standards and Instructions 1.5 MB
1959	Santa Fe CTCs double track line 2.2 MB
1957	Seaway diverts CN mainline 532.3 KB
1937	Should Train Order Signals Control Automatic Signals 1.2 MB
1922	Signal Construction on the Santa Fe 797.6 KB
1937	Signal Construction on the Wabash 12.2 MB
1957	Signal controls by track circuit only 575.8 KB
1949	Signaling and Interlocking On New Line of New York Subways 6.5 MB
1950	Signaling and Rules 1.4 MB
1937	Signaling at Lap Sidings 1.1 MB
1937	Signaling at Lap Sidings 2.6 MB
1925	Signaling at the Age of Maturity 2.0 MB
1933	Signaling Construction During 1932 632.3 KB
1944	Signaling Construction Increased in 1943 8.8 MB
1944	Signaling Modernized On the Pittsburgh & Lake Erie 4.7 MB
1934	Signaling of the New York Subways 3.9 MB
1911	Signaling on the Illinois Traction System 1.5 MB
1937	Signaling on the Wabash 3.7 MB
1947	Signaling Order Issued by ICC 533.4 KB
1916	Signaling the Milwaukee's Electric Zone 624.8 KB
1939	Signaling the Pennsylvania to New York World's Fair 4.2 MB
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
1943	Signals Ordered on the Kansas City Southern 1.4 MB
1951	Single Track with CTC Replaces Double Track on Milwaukee 586.0 KB
1940	Single-Track Signaling 2.5 MB
1909	Solenoid Signals 2.1 MB
1943	Some Benefits of the War 780.5 KB
1952	Soo Line Completes Signaling on 260 Miles of Single Track 737.7 KB
1940	Southern Pacific Petition Denied 3.0 MB
1958	Special combinations of single-track and two-track replace double track on the Southern 960.9 KB
1960	Special report- Questions on hotbox detectors 290.9 KB
1939	Speeding Up Train Operation With Signaling 4.5 MB
1911	Summary of Recent Progress in Signaling 4.4 MB
1910	Supplemental Notes on Drafting Practice 382.8 KB
1937	Switch Lamps in Automatic Territory 1.2 MB
1937	Switch Protection in Automatic Territory 3.0 MB
1950	Telephones at Signals 1.1 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1939	Testing Automatic Signal Controls 950.8 KB
1912	The Automatic Signal and the Local Circuit 1.9 MB
1936	The Delaware, Lackawanna & Western's Approach-Lighting System for Semaphore Signals 3.4 MB
1908	The Electro-Pneumatic Signal and Interlocking System at the New Union Station, Washington, DC 4.5 MB
1912	The New York, Westchester & Boston Railway (1912-08) 4.1 MB
1912	The New York, Westchester & Boston Railway (1912-10) 4.7 MB
1912	The New York, Westchester & Boston Railway (1912-12) 4.8 MB
1913	The Union’s Signaling Exhibition Room 1.5 MB
1946	The User of Signaling 895.2 KB
1954	This Automatic Block Is Different 3.3 MB
1939	Track Turnouts and Signal Aspects 1.8 MB
1949	Train Indicator for Motor Car 1.0 MB
1949	Train Operation By Signal Inidication Used Extensively on the Nickel Plate 6.1 MB
1956	Train Operations When CTC Fails 3.5 MB
1956	Train Operations When CTC Fails 2.4 MB
1928	Train Order Indicators Used Successfully on the CI&L 604.3 KB
1961	Trainmen Read Hotbox Locator 1.1 MB
1956	Union Pacific Installs Protection For Motor Cars at Tunnels 3.2 MB
1954	Unique Combinations of Single-Track and Two-Track Developed on the Southern 3.8 MB
1915	Victoria Jubilee Bridge Protection 570.0 KB
1937	What is in Store for the Signal Field? 1.8 MB
1958	What's the answer? Approach lighting 237.1 KB
1955	What's the Answer? CTC Into Service 409.5 KB
1957	Why Cotton Belt installed CTC on entire main line 914.0 KB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB

automatic block signals 6

1949	192 Miles of Automatic Block On Soo Line 6.0 MB
1941	Field Circuits For Simplified Semi-Automatic Signaling 3.6 MB
1913	New Signaling Across the Great Salt Lake 2.2 MB
1965	News briefs. 1965-06 1.2 MB
1921	Non-Interlocking Non-Stop Grade Crossings 1.6 MB
1949	Signaling Adapted to Traffic On the Rock Island 5.2 MB

automatic cab signaling 1

1964	News briefs. 1964-04 1.3 MB

automatic car identification 6

1964	Automatic identity systems proposed 736.1 KB
1964	Cars identified automatically 512.0 KB
1963	News briefs. 1963-01 951.3 KB
1963	News briefs. 1963-04 896.6 KB
1964	News briefs. 1964-02 992.4 KB
1966	News briefs. 1966-01 1.4 MB

automatic centralized traffic control 4

1961	Brazilian Automated CTC Will Make Meets 1.2 MB
1960	CTC signals clear automatically 1.1 MB
1960	From the field 945.2 KB
1962	SP Has 500 Miles of Automatic CTC 363.6 KB

automatic classification yard 6

1960	British install automatic yard near London 348.3 KB
1960	CNR opens Moncton yard 760.9 KB
1965	Midwest RRs fight the weather 914.4 KB
1964	News briefs. 1964-08 811.5 KB
1966	News briefs. 1966-01 1.4 MB
1960	Signaling enters automation 630.7 KB

automatic classification yards 6

1958	Automatic classification yard in service on the Burlington at Chicago 2.9 MB
1959	Britain's first automatic yard 312.0 KB
1960	British open new class yard 240.4 KB
1959	How retarder controls function at Young Yard on the NYC 978.1 KB
1960	News briefs. 1960-11 875.5 KB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB

automatic control 1

1956	Train Runs by Wayside Control 3.3 MB

automatic control of junction switches 1

1955	New Cleveland Transit System 917.8 KB

automatic dispatching 2

1963	Automated Rail Transit Discussed by IEEE-ASME 315.3 KB
1964	What CTC Can Do For You 417.8 KB

automatic gates 4

1947	Crossing Protection in Gary, Indiana 1.6 MB
1947	Highway Crossing Protection Installed by Several Railroads in Gary, IndianaR 1.2 MB
1961	News briefs. 1961-04 1.5 MB
1959	North Western installs automatic gates at nine crossings 699.9 KB

automatic half-barrier gates 1

1961	News briefs. 1961-06 725.8 KB

automatic interlocking 82

1962	1962 outlook 3.0 MB
1945	A Most Complicated Automatic Interlocking 2.6 MB
1935	Accident at Automatic Plant 4.5 MB
1949	An Unusual Automatic Plant 4.5 MB
1947	Annual Review and Outlook 425.1 KB
1939	Automatic Cut-Outs at an Automatic Interlocking 7.6 MB
1924	Automatic Interlocker for a Crossing 3.4 MB
1935	Automatic Interlocking on the Brooklyn-Manhattan Transit 5.4 MB
1935	Automatic Interlocking on the Philadelphia Elevated 6.1 MB
1935	Automatic Interlocking on the Wabash 2.9 MB
1932	Automatic Interlocking Protects End of Double Track 2.7 MB
1935	Automatic Interlockings of Two Junctions Involving Spring Switches 8.9 MB
1937	Automatic Plant Replaces Mechanical Interlocking 1.3 MB
1958	B&M goes underground 725.7 KB
1923	BRT Automatic Interlocking 1.9 MB
1953	Call-On Signals 354.5 KB
1938	Clearing of Signals at Automatic Interlockings 2.2 MB
1955	CTC on single and double track 406.8 KB
1955	CTC Saves Time for Freights On 135 Miles of Single Track 4.0 MB
1936	Demands for Modern Signaling 12.1 MB
1941	DT&I Installs Automatic Interlocking 5.0 MB
1959	Fewer wayside observers makes automatic hazard detection necessary 1.1 MB
1935	Great Western Constructs Automatic Interlocking 6.8 MB
1939	ICC Approves Automatic Interlocking to Replace Mechanical Plant 1.0 MB
1935	Improving Automatic Interlockings 3.5 MB
1954	Junction Controlled Automatically 2.5 MB
1936	Location of Home Signals at Automatic Interlockings 3.0 MB
1941	Loss of Shunt 912.3 KB
1961	Loss of Shunt at Automatic Interlockings 195.5 KB
1951	More Signal Construction in 1950 1.0 MB
1955	Much is new in signaling for 1955 826.7 KB
1950	New Rules, Standards and Instructions Issued by the Interstate Commerce Commission 7.9 MB
1960	New York City Transit to spend $23 million for signals 189.2 KB
1959	News briefs. 1959-05 506.5 KB
1960	News briefs. 1960-02 995.4 KB
1960	News briefs. 1960-03 1.9 MB
1961	News briefs. 1961-04 1.5 MB
1961	News briefs. 1961-05 1.1 MB
1961	News briefs. 1961-07 648.9 KB
1961	News briefs. 1961-10 1.0 MB
1962	News briefs. 1962-02 1.4 MB
1962	News briefs. 1962-03 1.1 MB
1962	News briefs. 1962-04 1.2 MB
1962	News briefs. 1962-06 989.1 KB
1962	News briefs. 1962-07 494.2 KB
1962	News briefs. 1962-10 461.7 KB
1962	News briefs. 1962-11 468.1 KB
1963	News briefs. 1963-01 951.3 KB
1963	News briefs. 1963-03 790.6 KB
1963	News briefs. 1963-05 720.2 KB
1963	News briefs. 1963-06 961.3 KB
1963	News briefs. 1963-10 497.4 KB
1963	News briefs. 1963-11 1.4 MB
1963	News briefs. 1963-12 429.2 KB
1964	News briefs. 1964-05 1.0 MB
1964	News briefs. 1964-06 812.0 KB
1964	News briefs. 1964-07 833.0 KB
1964	News briefs. 1964-09 879.4 KB
1964	News briefs. 1964-10 768.6 KB
1965	News briefs. 1965-01 2.0 MB
1965	News briefs. 1965-09 381.8 KB
1965	News briefs. 1965-11 1.2 MB
1932	Now That It Has Happened 1.0 MB
1958	Programmed interlocking control 337.6 KB
1938	Releases for Automatic Interlockings 1.7 MB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1950	Rules, Standards and Instructions 1.5 MB
1959	Santa Fe CTCs double track line 2.2 MB
1957	Seaway diverts CN mainline 532.3 KB
1937	Selection of Routes at Automatic Interlockings 1.4 MB
1937	Semi-Automatic Interlockings on the Boston Elevated 3.8 MB
1959	Signaling moderate during '58 528.6 KB
1936	Speed at Automatic Plants 4.9 MB
1936	Speed Limits at Automatic Interlocking 3.2 MB
1931	State Commission Formulates Requirements of Automatic Interlockers 2.3 MB
1958	Subway consolidates interlockings 2.2 MB
1960	Subway trains route themselves 1.2 MB
1936	Testing Automatic Interlockings 3.5 MB
1937	Train Shunt at Automatic Plants 1.2 MB
1931	What Can Be Done Now? 736.8 KB
1958	What’s the answer? Interlocking check 175.3 KB
1927	Why Not Use the Term "Automatic Interlocking"? 907.8 KB

automatic interlocking testing 1

1965	What's the answer? 1965-12 261.7 KB

automatic OS 1

1960	What’s the answer? Automatic OS 354.1 KB

automatic program control 1

1958	Programmed interlocking control 337.6 KB

automatic railcar identification 2

1959	Communications is everywhere at P&LE's Gateway Yard in Youngstown, Ohio 2.1 MB
1958	RS&C 50th anniversary: Looking ahead 652.9 KB

automatic retarder yard 9

1957	Automation yard control on the Pennsylvania 882.0 KB
1958	Central opens Young Yard 2.5 MB
1963	News briefs. 1963-03 790.6 KB
1963	News briefs. 1963-04 896.6 KB
1963	News briefs. 1963-05 720.2 KB
1964	News briefs. 1964-06 812.0 KB
1965	PRR converts two hump yards 630.5 KB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1963	S&C Role Is Basic To Bison Yard 3.0 MB

automatic retarder yards 3

1959	How retarder controls function at Young Yard on the NYC 978.1 KB
1960	News briefs. 1960-03 1.9 MB
1958	RS&C 50th anniversary: Looking ahead 652.9 KB

automatic route selection 1

1964	How computers may be applied 1.2 MB

automatic speed control 1

1962	News briefs. 1962-03 1.1 MB

automatic subway train 1

1963	News briefs. 1963-01 951.3 KB

automatic switching 3

1957	Automation yard control on the Pennsylvania 882.0 KB
1958	Central opens Young Yard 2.5 MB
1958	RS&C 50th anniversary: Looking ahead 652.9 KB

automatic train control 61

1947	All-Relay Interlockings On the RF&P 1.3 MB
1947	Annual Review and Outlook 425.1 KB
1947	Application of Code Principles to Signaling 406.6 KB
1922	Automatic Train Control in Use On American Railroads 353.7 KB
1923	C&NW Tests GRS Train Control 3.7 MB
1965	C&NW’s ATC uses 100 cps AC 901.0 KB
1928	C&O Signaling and Train Control Facilitate Operation 4.1 MB
1936	Cab Signaling 7.8 MB
1939	Cab Signaling and Train Control On the San Francisco-Oakland Bay Bridge 7.2 MB
1935	Cab Signals and ATC on UP Streamliner 2.1 MB
1959	Chicago & North Western Has Unique Hump Cab Signal Controls 2.2 MB
1924	Controlled Manual Block Signaling With Train Control 5.5 MB
1922	Final Train Control Order Issued by ICC 417.4 KB
1909	First Annual Report of the Block Signal and Train Control Board to the Interstate Commerce Commission 4.0 MB
1960	Gangs do signal maintenance 309.7 KB
1923	GRS Automatic Train Control 4.1 MB
1947	ICC Holds Signal Hearing 507.5 KB
1949	ICC Issues Statistics 850.7 KB
1924	ICC Modifies Train Control Order 5.7 MB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1947	ICC Signal Hearings 179.7 KB
1937	Illinois Central Petitions to Remove Train Control 1.6 MB
1960	Iran railways have simplified ATC 380.5 KB
1965	Midwest RRs fight the weather 914.4 KB
1959	Monorail is signaled electronically 573.9 KB
1951	More Signal Construction in 1950 1.0 MB
1960	News briefs. 1960-02 995.4 KB
1960	News briefs. 1960-06 1.2 MB
1962	News briefs. 1962-06 989.1 KB
1965	News briefs. 1965-06 1.2 MB
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. 1922-09 562.2 KB
1922	News of the Month. 1922-10 368.4 KB
1922	News of the Month. 1922-11 361.5 KB
1923	News of the Month. 1923-10 1.9 MB
1951	Pennsylvania Exhibits Speed Control 512.5 KB
1955	Pennsylvania installs wayside equipment for cab signaling 745.7 KB
1922	Railroads Argue Against Automatic Stops at ICC Hearing 436.8 KB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1937	Report of Committee X – Signaling Practice 2.9 MB
1924	Results of Train Control Test on Pennsylvania 3.1 MB
1924	Rock Island Installs Train Control 847.9 KB
1937	Rock Island Petitions Removal of Train Control 1.4 MB
1939	San Francisco-Oakland Bay Bridge Interlocking Plants 9.4 MB
1939	San Francisco-Oakland Bay Bridge Signaling and Interlocking 7.9 MB
1949	Santa Fe Gets Some Relief from ICC Signaling Order 2.2 MB
1950	Signaling and Rules 1.4 MB
1933	Signaling Construction During 1932 632.3 KB
1947	Signaling Order Issued by ICC 533.4 KB
1939	Speeding Up Train Operation With Signaling 4.5 MB
1924	Study of Train Control on the Michigan Central 2.1 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1922	The Sprague Train Control System 609.3 KB
1924	The Union Continuous Train Control 5.7 MB
1924	Three Train Control Contracts Let 1.9 MB
1924	Train Control Ordered on 92 Roads 397.4 KB
1922	Work in Signal Field Shows Gain Over 1920 784.5 KB
1924	Wrecks Preventable by Train Control 4.0 MB

automatic train dispatching 2

1962	Automatic Dispatching 2.1 MB
1964	How computers may be applied 1.2 MB

automatic train identification 6

1957	More automation for signaling in 1957 1.2 MB
1960	Railroads fit automation 186.8 KB
1958	RS&C 50th anniversary: Signaling ... manual to automatic 2.0 MB
1958	Subway consolidates interlockings 2.2 MB
1960	Subway trains route themselves 1.2 MB
1964	Train Describers: A step toward ATI 2.1 MB

automatic train operation 18

1962	1962 outlook 3.0 MB
1965	AFO circuits can be used in subways 676.7 KB
1962	Automatic Freight Train is Crewless 1.1 MB
1964	Eight cities test automatic train operation 1.1 MB
1965	Japan, Sweden, England test ATO 6.3 MB
1960	News briefs. 1960-09 756.9 KB
1961	News briefs. 1961-04 1.5 MB
1961	News briefs. 1961-12 978.0 KB
1963	News briefs. 1963-01 951.3 KB
1963	News briefs. 1963-05 720.2 KB
1964	News briefs. 1964-06 812.0 KB
1965	News briefs. 1965-11 1.2 MB
1960	Radio controls switcher 253.3 KB
1960	Railroads fit automation 186.8 KB
1960	Remote control train: Successful tests in France 209.9 KB
1960	Signaling enters automation 630.7 KB
1962	Toronto Railway Conference – Automatic Train Operation 448.4 KB
1965	Transit vehicles set for automatic running 182.7 KB

automatic train stop 64

1936	Accident in Automatic Block Signal Territory 4.7 MB
1947	Annual Review and Outlook 425.1 KB
1947	Application of Code Principles to Signaling 406.6 KB
1940	ATC Tests Ordered 676.8 KB
1936	Cab Signaling 7.8 MB
1952	Chicago's Newest Subway Has Automatic Block Signaling and Train Stop 1.1 MB
1936	Demands for Modern Signaling 12.1 MB
1958	DL&W-Erie joint operation is ready to go 643.6 KB
1922	Final Train Control Order Issued by ICC 417.4 KB
1909	First Annual Report of the Block Signal and Train Control Board to the Interstate Commerce Commission 4.0 MB
1947	Hoosac Tunnel Interlocking and CTC 1.7 MB
1957	How to make non-stop meet with CTC 576.9 KB
1947	ICC Holds Signal Hearing 507.5 KB
1949	ICC Issues Statistics 850.7 KB
1924	ICC Modifies Train Control Order 5.7 MB
1922	ICC Proposes to Order Train Control on 49 Roads 376.4 KB
1957	ICC Reports on NYC wreck 205.5 KB
1947	ICC Signal Hearings 179.7 KB
1925	Illinois Central ATS contract: News of the Month (July 1925) 700.0 KB
1940	Illinois Central Order 1.3 MB
1937	Illinois Central Petitions to Remove Train Control 1.6 MB
1957	Lehigh Valley has check-in, check-out 755.3 KB
1927	Michigan Central Train Control Approved 800.8 KB
1943	Modernization of Automatic Signaling On the New York Central 9.8 MB
1951	More Signal Construction in 1950 1.0 MB
1955	Much is new in signaling for 1955 826.7 KB
1955	New Cleveland Transit System 917.8 KB
1950	New Rules, Standards and Instructions Issued by the Interstate Commerce Commission 7.9 MB
1933	New Train Stop System Developed in Germany 399.3 KB
1955	News briefs. 1955-08 830.4 KB
1958	News briefs. 1958-01 1.8 MB
1960	News briefs. 1960-04 896.6 KB
1960	News briefs. 1960-05 1.0 MB
1961	News briefs. 1961-07 648.9 KB
1962	News briefs. 1962-02 1.4 MB
1962	News briefs. 1962-04 1.2 MB
1964	News briefs. 1964-07 833.0 KB
1964	News briefs. 1964-09 879.4 KB
1965	News briefs. 1965-02 1.9 MB
1965	News briefs. 1965-06 1.2 MB
1965	News briefs. 1965-07 788.3 KB
1965	News briefs. 1965-08 749.4 KB
1965	News briefs. 1965-09 381.8 KB
1965	News briefs. 1965-10 1.1 MB
1923	News of the Month. 1923-10 1.9 MB
1940	Panama Limited Collides With Louisiane 1.0 MB
1947	Railroads Request Relief from the ICC Signal Order 365.7 KB
1950	Rules, Standards and Instructions 1.5 MB
1949	Santa Fe Gets Some Relief from ICC Signaling Order 2.2 MB
1955	Santa Fe installs CTC on single track 610.2 KB
1960	Signal construction steady in 1959 385.2 KB
1950	Signaling and Rules 1.4 MB
1944	Signaling Modernized On the Pittsburgh & Lake Erie 4.7 MB
1947	Signaling Order Issued by ICC 533.4 KB
1939	Signaling the Pennsylvania to New York World's Fair 4.2 MB
1924	Study of Train Control on the Michigan Central 2.1 MB
1958	Subway consolidates interlockings 2.2 MB
1947	Territories Involved in the ICC Signaling Order 388.2 KB
1953	The North Western Installs Automatic Train-Stop System 3.5 MB
1924	Three Train Control Contracts Let 1.9 MB
1936	Train Control on the B&O Diesel 2.6 MB
1924	Train Control Ordered on 92 Roads 397.4 KB
1938	Train Control Petition Denied by ICC 905.5 KB
1940	Two Accidents on the Illinois Central 2.8 MB

automatic vertical lift bridge 2

1962	News briefs. 1962-02 1.4 MB
1962	Trains Control Automatic Bridge 1.2 MB

automation 4

1960	Automation on the Russian railroads 695.9 KB
1958	Kink: Automatic control for waiting room 195.6 KB
1957	More automation for signaling in 1957 1.2 MB
1960	Signaling enters automation 630.7 KB

Avery, ID 2

1917	Light Signals On CM&StP 781.9 KB
1916	Signaling the Milwaukee's Electric Zone 624.8 KB

Avon, IN 1

1960	News briefs. 1960-07 845.4 KB

awards 2

1947	Illinois Central Honors Radio “Hams” for Emergency Services 278.0 KB
1947	Medals Awarded by Franklin Institute 236.3 KB

axle counters 4

1922	Controlled Manual Block in Hauenstein Tunnel 3.4 MB
1965	News briefs. 1965-02 1.9 MB
1965	Rhodesia has 1215 miles of CTC 949.2 KB
1957	Track circuit developments in Europe 234.8 KB

Ayer, MA 2

1947	CTC Extension on the Boston & Maine 792.3 KB
1958	Improved signaling results from grade elimination 883.1 KB

Aylmer, ND 3

1961	News briefs. 1961-07 648.9 KB
1962	News briefs. 1962-01 986.8 KB
1963	News briefs. 1963-06 961.3 KB

Railway Signaling: A