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.
1911 | Automatic Signals on the Northern Pacific 7.2 MB |
---|
1922 | Signal Construction on the Santa Fe 797.6 KB |
---|
1937 | New Automatics on the C&O 5.0 MB |
---|---|
1928 | Pennsylvania Installs an Interlocking Without Derails 2.3 MB |
1947 | Railroads Request Relief from the ICC Signal Order 465.0 KB |
---|
1935 | New Signaling on the Boston & Maine 9.9 MB |
---|
1932 | Miniature Signal System a Hobby 606.4 KB |
---|
1922 | Signal Construction on the Santa Fe 797.6 KB |
---|
1949 | Milwaukee Installs Automatic Block 8.2 MB |
---|
1941 | Interlocking and Automatic Signals on the Alton 3.0 MB |
---|
1943 | A Review of 1942 2.9 MB |
---|---|
1943 | Accident Involves Signaling 1.0 MB |
1943 | Some Benefits of the War 780.5 KB |
1937 | Warning Time With Crossing Gates 1.3 MB |
---|
1937 | Signaling Eliminates Platform Maintenance 3.9 MB |
---|
1917 | New Interlocking Plant in Milwaukee 1.2 MB |
---|
1912 | New Scheme of Interurban Automatic Signaling 1.9 MB |
---|---|
1913 | The Union’s Signaling Exhibition Room 1.5 MB |
1944 | Centennial of Morse Telegraph 6.6 MB |
---|---|
1935 | Coded Track Circuit Signaling on the Pennsylvania 9.8 MB |
1938 | Pennsylvania Electrification Signaling 5.3 MB |
1946 | Reverse Running on the Pennsylvania 2.8 MB |
1935 | Safety of High Speed Trains 5.2 MB |
1935 | Signaling for Higher Train Speeds 3.0 MB |
1944 | St. Louis-San Francisco Installs Centralized Traffic Control 1.1 MB |
1908 | The Electro-Pneumatic Signal and Interlocking System at the New Union Station, Washington, DC 4.5 MB |
1926 | Train Control Progress in 1925 3.1 MB |
1936 | New Interlocking Machines Abroad 1.3 MB |
---|
1933 | Automatic Interlocking in Train Control Territory 2.3 MB |
---|---|
1942 | Automatic Signal Program on the Illinois Central 4.6 MB |
1926 | Train Control Progress in 1925 3.1 MB |
1926 | Train Stop Without Permissive Wayside Signals Used on IC 3.5 MB |
1954 | Automatic Gates Increase Safety 3.2 MB |
---|---|
1936 | North Western Installs Automatic Gates 15.9 MB |
1949 | 192 Miles of Automatic Block On Soo Line 6.0 MB |
---|---|
1950 | Bootleg Risers and Bonds 2.1 MB |
1952 | Soo Line Completes Signaling on 260 Miles of Single Track 737.7 KB |
1936 | New Interlocking Machines Abroad 1.3 MB |
---|
1950 | Neon Lighting For Crossing Gate Arms 3.1 MB |
---|
1954 | This Automatic Block Is Different 3.3 MB |
---|
1936 | Accident in Automatic Block Signal Territory 4.7 MB |
---|
1944 | Light-Type Signals Installed on the Reading 6.3 MB |
---|---|
1934 | New Signaling on the Reading 631.4 KB |
1947 | CTC Has Long Sidings With Signals on the Santa Fe 2.1 MB |
---|---|
1947 | Railroads Request Relief from the ICC Signal Order 465.0 KB |
1950 | Train Signals for Highway Crossings 1.4 MB |
---|
1943 | Electric Interlocking Installed On IC 12.8 MB |
---|
1947 | Railroads Request Relief from the ICC Signal Order 465.0 KB |
---|
1935 | New Interlocking in the Chicago Loop 4.0 MB |
---|
1947 | ICC Holds Signal Hearing 507.5 KB |
---|
1946 | ICC 50-MPH Signal Hearing 6.9 MB |
---|
1925 | Signaling of Paired Track Operation 1.3 MB |
---|
1926 | Directing Trains By Signals 1.9 MB |
---|
1925 | Excellent Results for 35 Years on Burlington 1.5 MB |
---|
1947 | Annual Review and Outlook 425.1 KB |
---|---|
1925 | Color-Light Signals on C&NW 6.9 MB |
1950 | Longest Continuous Double-Track CTC Is on North Western 5.1 MB |
1922 | Train Control on the C&NW 824.8 KB |
1935 | New Signaling on the Boston & Maine 9.9 MB |
---|
1927 | Michigan Central Train Control Approved 800.8 KB |
---|
1925 | Multiple Track Operation by Signal Indication 2.7 MB |
---|
1954 | New Wayside and Cab Signaling 753.2 KB |
---|
1954 | New Wayside and Cab Signaling 753.2 KB |
---|
1937 | APB, Remote Control, and CTC on the Baltimore & Ohio 11.9 MB |
---|
1946 | W. M. Post retires 932.3 KB |
---|
1950 | Route Type Interlocking on New York Subway 8.7 MB |
---|
1938 | B&OCT Installs Route Interlocking 8.9 MB |
---|
1938 | Milwaukee Rehabilitates Large Plant 8.0 MB |
---|
1937 | Broken Rails 1.1 MB |
---|---|
1936 | Flood Damage to Signaling 5.0 MB |
1935 | Preventing Unnecessary Operation of Highway-Railroad Crossing Signals 4.3 MB |
1936 | Railroads Clean Up After Flood Waters 33.3 MB |
1937 | Rehabilitating Flooded Signaling 1.4 MB |
1945 | Signal Training on the Western Maryland 617.4 KB |
1945 | Teaching the Meaning of Signal Aspects 431.7 KB |
1947 | Annual Review and Outlook 425.1 KB |
---|---|
1950 | Centralized Train Dispatching 1.4 MB |
1956 | CTC Locking 2.2 MB |
1935 | Depression Operation of Interlocking 2.6 MB |
1931 | Efficiency Tests 1.9 MB |
1954 | Electric Interlocking on the Rio Grande 3.4 MB |
1947 | ICC Holds Signal Hearing 507.5 KB |
1950 | Increasing Use of Carrier 1.3 MB |
1956 | Main Track Leaving Signal 2.2 MB |
1950 | Modern Signaling Systems On Western Pacific 16.1 MB |
1939 | Rock Detector Protection on the Western Pacific 2.1 MB |
1934 | Signal Aspects at an Automatic Interlocking Plant 1.2 MB |
1947 | Territories Involved in the ICC Signaling Order 399.0 KB |
1950 | Train Signals for Highway Crossings 1.4 MB |
1935 | Crossing Signals on the C&NW at Oshkosh, Wis 3.4 MB |
---|---|
1937 | New Devices- March 1937 18.1 MB |
1936 | Reading Installs Unique Crossing Protection 9.5 MB |
1936 | Semaphore Type Crossing Gate Developed on the Alton 8.3 MB |
1939 | Testing Sets 2.0 MB |
1950 | Increasing Use of Carrier 1.3 MB |
---|
1915 | Extension of New Haven signals 684.8 KB |
---|
1950 | CTC Installed on 128 Miles of NKP 12.1 MB |
---|---|
1947 | New Interlocking at Bellevue, Ohio Protects Crossings of Four Railroads 997.9 KB |
1947 | Territories Involved in the ICC Signaling Order 399.0 KB |
1956 | B&O Crossings 4.3 MB |
---|---|
1932 | Centralized Traffic Control Installed on the Baltimore & Ohio 4.3 MB |
1937 | Ohio Flood Damages Signaling 9.7 MB |
1950 | Flood Detectors on the Katy 2.7 MB |
---|
1949 | Signaling Adapted to Traffic On the Rock Island 5.2 MB |
---|
1937 | Changes on the New York Central Lines 2.3 MB |
---|---|
1940 | Personal: Changes on the New York Central 2.2 MB |
1935 | Wig Wags Approved for PWA Projects 1.4 MB |
---|
1927 | NYC First to Install Complete Train Dispatching System 8.0 MB |
---|---|
1925 | Signaling at the Age of Maturity 2.0 MB |
1911 | Symbols and Nomenclature for Written Circuits 2.3 MB |
1925 | Train Operation by Signal Indication on Burlington for 14 Years 679.2 KB |
1946 | Remote Control and Reverse Running on the Erie 3.2 MB |
---|
1935 | Great Western Constructs Automatic Interlocking 6.8 MB |
---|
1922 | Signal Construction on the Santa Fe 797.6 KB |
---|
1947 | CTC Extension on the Boston & Maine 792.3 KB |
---|
1954 | Automatic Gates Increase Safety 3.2 MB |
---|---|
1935 | New Signaling on the Route of the C&NW "400" 9.6 MB |
1935 | Signaling for Higher Train Speeds 3.0 MB |
1935 | Coded Track Circuit Signaling on the Pennsylvania 9.8 MB |
---|---|
1933 | Signaling on the Pennsylvania's Electrified Line 3.6 MB |
1936 | Remote Control on the Pennsylvania 14.5 MB |
---|
1944 | CTC On 185 Miles on Canadian National 12.3 MB |
---|
1950 | Neon Lighting For Crossing Gate Arms 3.1 MB |
---|
1947 | Railroads Request Relief from the ICC Signal Order 465.0 KB |
---|
1947 | ICC Holds Signal Hearing 507.5 KB |
---|
1941 | Automatics Installed on North Shore 1.6 MB |
---|
1926 | Signal Business Is Good Especially For Single Track 382.3 KB |
---|
1950 | CTC Extended on the Rio Grande 4.4 MB |
---|
1918 | Record Snowstorms Paralyze Transportation 424.7 KB |
---|
1918 | Preparation For Winter On a Busy Terminal 273.8 KB |
---|
1947 | Railroads Request Relief from the ICC Signal Order 465.0 KB |
---|---|
1952 | Soo Line Completes Signaling on 260 Miles of Single Track 737.7 KB |
1947 | Territories Involved in the ICC Signaling Order 399.0 KB |
1937 | Remote Control on the Pennsylvania 5.2 MB |
---|
1929 | Pennsylvania Installs APB Signaling on 86 Miles 3.7 MB |
---|
1944 | CTC Speeds Ore Traffic On the DM&IR 4.6 MB |
---|
1944 | Light-Type Signals Installed on the Reading 6.3 MB |
---|
1915 | Extension of New Haven signals 684.8 KB |
---|
1943 | A Review of 1942 2.9 MB |
---|---|
1942 | Railroad Signals Go to War 11.4 MB |
1942 | Signal Aspects During Blackouts 2.2 MB |
1942 | Signal Lights In War 755.6 KB |
1943 | Some Benefits of the War 780.5 KB |
1945 | The Post-War Importance of Signaling 522.0 KB |
1941 | War on the British Railways 986.3 KB |
1935 | Crossing Bells at Flasher Signals 1.9 MB |
---|---|
1940 | Obituary: Leroy Wyant 1.0 MB |
1935 | Signaling for Higher Train Speeds 3.0 MB |
---|---|
1953 | The North Western Installs Automatic Train-Stop System 3.5 MB |