Railway Signaling: A

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"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   609.4 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
absolute permissive block 1
1955 News Briefs. 1955-08   801.6 KB
absolute permissive block signaling 44
1965 AAR and RLEA reply to RS&I exceptions   863.6 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
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
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
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
1937 Signal Construction on the Wabash   12.2 MB
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
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   1.0 MB
1920 What Scheme of Signaling is Most Desirable?   6.8 MB
1936 Wilmer W. Salmon, President of General Railway Signal Company, Dies   2.8 MB
absolute signals 4
1950 Differentiation Between Signals   1.1 MB
1950 Differentiation Between Signals   955.8 KB
1947 Light-out Protection at Home Signals   233.7 KB
1961 What’s the Answer? 1961-04   960.3 KB
AC-powered switch lamps 1
1962 Electric Switch Lamp Lighting Helps Reduce Operating Expense   661.7 KB
accident 32
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   572.9 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
1961 ICC Reports on Railroad Safety   189.7 KB
1935 Improving Automatic Interlockings   3.5 MB
1965 Indication locking inadequate says ICC in report   844.7 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
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
1915 The Gretna Disaster   252.1 KB
1940 Two Accidents on the Illinois Central   2.8 MB
accidents 7
1940 ATC Tests Ordered   676.8 KB
1935 Bells as Accessory Highway Crossing Protection   3.5 MB
1946 ICC 50-MPH Signal Hearing   6.9 MB
1935 Letter to the Editor: Highways vs. Railroads   1.7 MB
1920 Non-Automatic Blocks and Accident Records   4.3 MB
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, 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   830.1 KB
1963 News Briefs. 1963-05   742.2 KB
Ailene, VA 1
1963 News Briefs. 1963-03   830.1 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   1.4 MB
Akron, CO 1
1947 Burlington Concentrates CTC Control at Division Headquarters   840.8 KB
Akron, OH 3
1963 News Briefs. 1963-04   908.1 KB
1965 News Briefs. 1965-06   1.2 MB
1909 Union Switch & Signal’s Inspection Trip   1.5 MB
Alazon, NV 1
1925 Signaling of Paired Track Operation   1.3 MB
Albany, NY 3
1962 News Briefs. 1962-03   1.1 MB
1963 News Briefs. 1963-11   1.4 MB
1965 News Briefs. 1965-01   2.0 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
Albuquerque, NM 1
1961 Santa Fe Signals New Main Line   913.2 KB
Aldene, NJ 2
1964 News Briefs. 1964-09   899.1 KB
1964 News Briefs. 1964-12   998.6 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 3
1964 News Briefs. 1964-08   827.3 KB
1964 News Briefs. 1964-09   899.1 KB
1965 News Briefs. 1965-01   2.0 MB
Alexandria, VA 3
1947 All-Relay Interlockings On the RF&P   1.3 MB
1962 News Briefs. 1962-03   1.1 MB
1951 Signal Modernization Program on the RF&P   1.0 MB
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
all-relay interlocking 49
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
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
1955 CTC enables P&LE to remove fourth main track   515.3 KB
1947 Drawbridge Interlocking on the Elgin, Joliet & Eastern   647.3 KB
1949 Entrance-Exit Interlocking Installed on Missouri Pacific   3.0 MB
1956 Interlocking Consolidation: Three Into One in Baltimore   6.8 MB
1947 Large All-Relay Interlocking on the New York Central   2.5 MB
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
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   911.5 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
1964 News Briefs. 1964-06   820.5 KB
1965 News Briefs. 1965-10   1.1 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
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
1951 Signal Modernization Program on the RF&P   1.0 MB
1941 Southern Pacific Installs Interlocking at Drawbridge   6.3 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
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   685.4 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
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 5
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
1912 New Scheme of Interurban Automatic Signaling   1.9 MB
1913 New Signaling Across the Great Salt Lake   2.2 MB
Alto Pass, IL 1
1948 CTC Big Help to GM&O   1.7 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   399.0 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 4
1934 Automatic Plant Replaces Mechanical Interlocking on Alton & Southern   1.2 MB
1963 News Briefs. 1963-03   830.1 KB
1964 News Briefs. 1964-02   997.7 KB
1964 News Briefs. 1964-07   849.5 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   971.1 KB
1962 News Briefs. 1962-01   979.5 KB
amateur radio 1
1947 Illinois Central Honors Radio “Hams” for Emergency Services   278.0 KB
American Railway Association 1
1911 Railway Signal Association Convention: Committee I: Signaling Practice   3.8 MB
American Society of Mechanical Engineers 1
1963 Automated Rail Transit Discussed by IEEE-ASME   315.3 KB
American Transit Association 1
1965 AFO circuits can be used in subways   682.4 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   339.6 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
Anchorage, LA 1
1963 News Briefs. 1963-08   1.2 MB
Angola, NY 1
1955 News Briefs. 1955-08   801.6 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 12
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   894.7 KB
1965 What's the Answer? 1965-06   235.3 KB
approach locking 7
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
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 1
1932 Electro-Pneumatic Interlocking With Optical Route Indicators in the New Buenos Aires Terminal   715.1 KB
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   753.7 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 1
1964 News Briefs. 1964-01   555.4 KB
Armstrong, Saskatchewan 1
1964 News Briefs. 1964-01   555.4 KB
Art Institute of Chicago 1
1965 Crossing protection gets new look   490.1 KB
Ash Fork, AZ 2
1961 News Briefs. 1961-06   718.3 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 (July 1923)   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   801.6 KB
1957 Where Two Tracks Do the Work of Four   3.2 MB
aspects and indication 1
1955 New Cleveland Transit System   911.5 KB
aspects and indications 19
1911 A Summary of Signaling Practice   3.6 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
1938 Fundamental Aspects   651.0 KB
1955 How to run reverse temporarily   197.6 KB
1955 Much is new in signaling for 1955   826.7 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
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
1935 The Rudd-Rhea Signaling Report of the Pennsylvania   9.7 MB
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 4
1965 AAR and RLEA reply to RS&I exceptions   863.6 KB
1965 AAR excepts to 3 rule changes   647.5 KB
1965 Crossing protection gets new look   490.1 KB
1964 ICC Proposes RS&I Changes   2.3 MB
Atchison, KS 1
1962 News Briefs. 1962-09   835.6 KB
Atchison, Topeka & Santa Fe 108
1922 A Swing Rail Crossing   557.8 KB
1920 A Train Sign Used As an Indicator   267.5 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
1956 Gate Arm Stripes   1.3 MB
1946 ICC 50-MPH Signal Hearing   6.9 MB
1947 ICC Holds Signal Hearing   507.5 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
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
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   801.6 KB
1961 News Briefs. 1961-06   718.3 KB
1961 News Briefs. 1961-12   971.1 KB
1962 News Briefs. 1962-01   979.5 KB
1962 News Briefs. 1962-02   1.4 MB
1962 News Briefs. 1962-06   980.1 KB
1962 News Briefs. 1962-09   835.6 KB
1963 News Briefs. 1963-01   971.6 KB
1963 News Briefs. 1963-08   1.2 MB
1964 News Briefs. 1964-02   997.7 KB
1964 News Briefs. 1964-04   1.4 MB
1964 News Briefs. 1964-10   778.4 KB
1965 News Briefs. 1965-07   793.4 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
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
1935 Safety of High Speed Trains   5.2 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
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
1956 Signal Lamp Test   1.4 MB
1935 Signaling in Dust Storms   2.3 MB
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   399.0 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   258.0 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
1955 What's the Answer? CTC Into Service   409.5 KB
1931 Why Not Eliminate Train Stops at Permissive Wayside Signals   763.1 KB
Athens, AL 2
1961 News Briefs. 1961-01   755.2 KB
1963 News Briefs. 1963-03   830.1 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   685.4 KB
1962 News Briefs. 1962-09   835.6 KB
1963 News Briefs. 1963-11   1.4 MB
1964 News Briefs. 1964-02   997.7 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 Terminal 1
1950 Double to Single Track with Remote Control   4.2 MB
Atlanta, GA 8
1947 Automatic Block With Spring Switches installed on the Georgia Railroad   851.4 KB
1950 Big NX Interlocking at Atlanta   6.3 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   827.3 KB
1964 News Briefs. 1964-10   778.4 KB
1965 News Briefs. 1965-01   2.0 MB
1955 What CTC did for the Dixie Line   889.8 KB
Atlantic Coast Line 46
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
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   801.6 KB
1961 News Briefs. 1961-04   1.5 MB
1961 News Briefs. 1961-12   971.1 KB
1962 News Briefs. 1962-02   1.4 MB
1962 News Briefs. 1962-05   831.1 KB
1962 News Briefs. 1962-06   980.1 KB
1963 News Briefs. 1963-01   971.6 KB
1963 News Briefs. 1963-04   908.1 KB
1963 News Briefs. 1963-05   742.2 KB
1964 News Briefs. 1964-02   997.7 KB
1964 News Briefs. 1964-05   1.0 MB
1964 News Briefs. 1964-07   849.5 KB
1964 News Briefs. 1964-10   778.4 KB
1965 News Briefs. 1965-01   2.0 MB
1965 News Briefs. 1965-07   793.4 KB
1931 Precision-Base Lamps   1.4 MB
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   399.0 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
Attica, NY 1
1951 Double to Single Track 60 Miles on the Erie   1.1 MB
Atwater, MN 1
1934 Ends of Double Track Equipped With Automatic Interlocking   987.5 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 1
1918 New Mechanical Plant on Chicago & Alton   702.8 KB
audio frequency overlay 2
1964 AFO can solve highway crossing problems   1.9 MB
1965 AFO circuits can be used in subways   682.4 KB
audio frequency track circuits 4
1962 Electronic Track Circuits   740.3 KB
1965 News Briefs. 1965-07   793.4 KB
1965 News Briefs. 1965-11   1.2 MB
1964 San Francisco will test four ATO systems   1.4 MB
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 14
1928 Burlington Completes Automatic Signals Chicago to Denver   5.1 MB
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
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   997.7 KB
1965 News Briefs. 1965-01   2.0 MB
1965 News Briefs. 1965-09   379.4 KB
1935 Safety of High Speed Trains   5.2 MB
1935 Signaling for Higher Train Speeds   3.0 MB
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
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 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 train operation 1
1964 San Francisco will test four ATO systems   1.4 MB
automated trains 1
1961 News Briefs. 1961-05   1.1 MB
automatic block signal 1
1913 The Union’s Signaling Exhibition Room   1.5 MB
automatic block signaling 212
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   913.8 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
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
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
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
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
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
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   189.7 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
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   911.5 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
1924 New York Commission Recalls Order   3.3 MB
1955 News Briefs. 1955-08   801.6 KB
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   654.1 KB
1961 News Briefs. 1961-10   1.0 MB
1962 News Briefs. 1962-01   979.5 KB
1962 News Briefs. 1962-02   1.4 MB
1962 News Briefs. 1962-04   1.2 MB
1962 News Briefs. 1962-07   509.0 KB
1962 News Briefs. 1962-10   457.3 KB
1963 News Briefs. 1963-03   830.1 KB
1963 News Briefs. 1963-05   742.2 KB
1963 News Briefs. 1963-06   973.6 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   753.7 KB
1965 News Briefs. 1965-10   1.1 MB
1966 News Briefs. 1966-01   1.4 MB
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
1939 Operation by Signal Indication on Single Track   846.7 KB
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
1941 Rule 204   1.7 MB
1950 Rules, Standards and Instructions   1.5 MB
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
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
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
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   399.0 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
1946 The User of Signaling   894.7 KB
1954 This Automatic Block Is Different   3.3 MB
1939 Track Turnouts and Signal Aspects   1.8 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   1.0 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
1955 What's the Answer? CTC Into Service   409.5 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   1.4 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   971.6 KB
1963 News Briefs. 1963-04   908.1 KB
1964 News Briefs. 1964-02   997.7 KB
1966 News Briefs. 1966-01   1.4 MB
automatic centralized traffic control 2
1961 Brazilian Automated CTC Will Make Meets   1.2 MB
1962 SP Has 500 Miles of Automatic CTC   363.6 KB
automatic classification yard 3
1965 Midwest RRs fight the weather   914.3 KB
1964 News Briefs. 1964-08   827.3 KB
1966 News Briefs. 1966-01   1.4 MB
automatic control 1
1956 Train Runs by Wayside Control   3.3 MB
automatic control of junction switches 1
1955 New Cleveland Transit System   911.5 KB
automatic dispatching 2
1963 Automated Rail Transit Discussed by IEEE-ASME   315.3 KB
1964 What CTC Can Do For You   427.1 KB
automatic gates 3
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
automatic half-barrier gates 1
1961 News Briefs. 1961-06   718.3 KB
automatic interlocking 67
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
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
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
1961 News Briefs. 1961-04   1.5 MB
1961 News Briefs. 1961-05   1.1 MB
1961 News Briefs. 1961-07   654.1 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   980.1 KB
1962 News Briefs. 1962-07   509.0 KB
1962 News Briefs. 1962-10   457.3 KB
1962 News Briefs. 1962-11   473.4 KB
1963 News Briefs. 1963-01   971.6 KB
1963 News Briefs. 1963-03   830.1 KB
1963 News Briefs. 1963-05   742.2 KB
1963 News Briefs. 1963-06   973.6 KB
1963 News Briefs. 1963-10   518.0 KB
1963 News Briefs. 1963-11   1.4 MB
1963 News Briefs. 1963-12   422.5 KB
1964 News Briefs. 1964-05   1.0 MB
1964 News Briefs. 1964-06   820.5 KB
1964 News Briefs. 1964-07   849.5 KB
1964 News Briefs. 1964-09   899.1 KB
1964 News Briefs. 1964-10   778.4 KB
1965 News Briefs. 1965-01   2.0 MB
1965 News Briefs. 1965-09   379.4 KB
1965 News Briefs. 1965-11   1.2 MB
1932 Now That It Has Happened   1.0 MB
1938 Releases for Automatic Interlockings   1.7 MB
1950 Rules, Standards and Instructions   1.5 MB
1937 Selection of Routes at Automatic Interlockings   1.4 MB
1937 Semi-Automatic Interlockings on the Boston Elevated   3.8 MB
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
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
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 interocking 1
1962 1962 outlook   3.0 MB
automatic retarder yard 6
1963 News Briefs. 1963-03   830.1 KB
1963 News Briefs. 1963-04   908.1 KB
1963 News Briefs. 1963-05   742.2 KB
1964 News Briefs. 1964-06   820.5 KB
1965 PRR converts two hump yards   634.6 KB
1963 S&C Role Is Basic To Bison Yard   3.0 MB
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   971.6 KB
automatic train control 42
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
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
1909 First Annual Report of the Block Signal and Train Control Board to the Interstate Commerce Commission   4.0 MB
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
1947 ICC Signal Hearings   179.7 KB
1937 Illinois Central Petitions to Remove Train Control   1.6 MB
1965 Midwest RRs fight the weather   914.3 KB
1951 More Signal Construction in 1950   1.0 MB
1962 News Briefs. 1962-06   980.1 KB
1965 News Briefs. 1965-06   1.2 MB
1923 News of the Month (October 1923)   1.9 MB
1951 Pennsylvania Exhibits Speed Control   512.5 KB
1955 Pennsylvania installs wayside equipment for cab signaling   745.7 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
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   399.0 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
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 1
1964 Train Describers: A step toward ATI   2.1 MB
automatic train operation 13
1962 1962 outlook   3.0 MB
1965 AFO circuits can be used in subways   682.4 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
1961 News Briefs. 1961-04   1.5 MB
1961 News Briefs. 1961-12   971.1 KB
1963 News Briefs. 1963-01   971.6 KB
1963 News Briefs. 1963-05   742.2 KB
1964 News Briefs. 1964-06   820.5 KB
1965 News Briefs. 1965-11   1.2 MB
1962 Toronto Railway Conference – Automatic Train Operation   457.7 KB
1965 Transit vehicles set for automatic running   182.7 KB
automatic train stop 52
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
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
1947 ICC Holds Signal Hearing   507.5 KB
1949 ICC Issues Statistics   850.7 KB
1924 ICC Modifies Train Control Order   5.7 MB
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
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   911.5 KB
1950 New Rules, Standards and Instructions Issued by the Interstate Commerce Commission   7.9 MB
1955 News Briefs. 1955-08   801.6 KB
1961 News Briefs. 1961-07   654.1 KB
1962 News Briefs. 1962-02   1.4 MB
1962 News Briefs. 1962-04   1.2 MB
1964 News Briefs. 1964-07   849.5 KB
1964 News Briefs. 1964-09   899.1 KB
1965 News Briefs. 1965-02   1.9 MB
1965 News Briefs. 1965-06   1.2 MB
1965 News Briefs. 1965-07   793.4 KB
1965 News Briefs. 1965-08   753.7 KB
1965 News Briefs. 1965-09   379.4 KB
1965 News Briefs. 1965-10   1.1 MB
1923 News of the Month (October 1923)   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
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
1947 Territories Involved in the ICC Signaling Order   399.0 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
Avery, ID 2
1917 Light Signals On CM&StP   781.9 KB
1916 Signaling the Milwaukee's Electric Zone   624.8 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 3
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
Ayer, MA 1
1947 CTC Extension on the Boston & Maine   792.3 KB
Aylmer, ND 3
1961 News Briefs. 1961-07   654.1 KB
1962 News Briefs. 1962-01   979.5 KB
1963 News Briefs. 1963-06   973.6 KB

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