Railway Signaling: L

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La Griega, Mexico 1
1962 News Briefs. 1962-03   1.1 MB
La Junta, CO 1
1947 Railroads Request Relief from the ICC Signal Order   365.7 KB
La Porte, IA 1
1951 Automatic Block for Few Fast Trains   286.5 KB
La Salle, NY 1
1963 News Briefs. 1963-03   830.1 KB
La Salle-Congress interlocking, Chicago, IL 1
1952 Chicago's Newest Subway Has Automatic Block Signaling and Train Stop   1.1 MB
La Vergne, IL 1
1954 New Wayside and Cab Signaling   753.2 KB
laboratory 1
1949 Signal Research and Development   2.9 MB
Labrador City, Labrador 2
1962 Automatic Freight Train is Crewless   1.1 MB
1962 News Briefs. 1962-09   835.6 KB
Laceyville, PA 1
1966 News Briefs. 1966-01   1.4 MB
Lackawaxen, PA 1
1931 Erie Increases Track Capacity on Busy Section of Double Track   2.6 MB
Lafayette Jct., IN 1
1941 Monon Changes Approved   760.8 KB
Lafayette, IN 4
1931 Centralized Traffic Control Installed on Wabash   5.6 MB
1942 Chicago, Indianapolis & Louisiville Modernizes Automatic Signaling   3.9 MB
1941 Monon Changes Approved   760.8 KB
1940 Wabash Installs Gate and Signal Protection for All Crossings in Lafayette   4.9 MB
Lafayette, LA 1
1962 Centralization – Dispatch Circuits Are Changing   1.3 MB
Lagny, France 1
1935 Letter to the Editor: Use of Cab Signals   1.2 MB
Lake Bluff, IL 2
1954 Automatic Gates Increase Safety   3.2 MB
1926 North Shore Line Installs Two Electric Interlockers   2.1 MB
Lake Erie & Western 1
1920 Modern Telegraph Office at Indianapolis   3.1 MB
Lake Forest, IL 1
1954 Automatic Gates Increase Safety   3.2 MB
Lake Harbor Branch, FL 1
1964 News Briefs. 1964-08   827.3 KB
Lake Park, FL 1
1965 News Briefs. 1965-10   1.1 MB
Lake Park, MN 3
1961 News Briefs. 1961-06   718.3 KB
1962 News Briefs. 1962-02   1.4 MB
1963 News Briefs. 1963-10   518.0 KB
Lake Shore & Michigan Southern 2
1912 New Single Track Signals on the Lake Shore   283.2 KB
1911 Railway Signal Association Convention: Committee I: Signaling Practice   3.8 MB
Lake Street, Chicago, IL 4
1919 A Peculiar Accident   251.7 KB
1911 Interlocking on the North Western Terminal   7.6 MB
1925 Maintenance on C&NW Terminals   12.5 MB
1911 Signaling and Interlocking on the North Western Terminal in Chicago   1.1 MB
Lake View, MS 1
1963 News Briefs. 1963-11   1.4 MB
Lake Villa, IL 1
1964 News Briefs. 1964-08   827.3 KB
Lake Worth, FL 1
1962 News Briefs. 1962-09   835.6 KB
Lake, WI 3
1943 Centralized Traffic Control on the Milwaukee   2.8 MB
1963 News Briefs. 1963-12   422.5 KB
1935 Safety of High Speed Trains   5.2 MB
Lakeside, UT 1
1913 New Signaling Across the Great Salt Lake   2.2 MB
Lakewood, OH 1
1935 Traffic Type Signals for Protection of Highway-Railroad Crossings   2.5 MB
LaMar, IA 1
1947 ICC Signal Hearings   179.7 KB
Lamar, MI 2
1954 Loudspeakers and Interlocking Improve Yard Operation   4.7 MB
1949 Modern Signaling on a Division   6.6 MB
Lamar, MO 1
1962 News Briefs. 1962-03   1.1 MB
lamps 1
1927 A Reserve Filament Device to Prevent Light-Out Failures   529.8 KB
Lancashire, England 1
1921 A Complete Train Despatching System   1.7 MB
Lancaster & Yorkshire 1
1921 A Complete Train Despatching System   1.7 MB
Lancaster, PA 1
1929 Pennsylvania Installs Interlocking at Lancaster, PA   3.6 MB
Lane, SC 2
1963 News Briefs. 1963-01   971.6 KB
1963 News Briefs. 1963-04   908.1 KB
Lanes Crossing, NJ 1
1931 Centralized Traffic Control Postpones Four-Tracking on Central of New Jersey   3.0 MB
Lansdale, PA 1
1963 News Briefs. 1963-12   422.5 KB
Lansing, MI 1
1937 Signaling Eliminates Platform Maintenance   3.9 MB
lap sidings 2
1937 Signaling at Lap Sidings   1.1 MB
1937 Signaling at Lap Sidings   2.6 MB
Laramie, WY 1
1955 CTC and cab signaling on Union Pacific   789.5 KB
Laredo, MO 2
1945 Milwaukee Installs CTC On 51 Miles   6.5 MB
1945 The New Connections at Kansas City For Milwaukee and Rock Island   4.7 MB
Las Vegas, NM 1
1922 Signal Construction on the Santa Fe   797.6 KB
Las Vegas, NV 3
1944 Railroad Applications of Electronics   1.9 MB
1944 Track Circuits on Passing Tracks in CTC Territory   941.8 KB
1943 Union Pacific Installs CTC on 175 Miles of Single Track   13.2 MB
Lascelles, T. S. 1
1923 Automatics on Paris Grande Ceinture   5.0 MB
Lathrop, CA 1
1962 News Briefs. 1962-10   457.3 KB
Latimer, J. B. 1
1921 The Use of a Standard System of Nomenclature   337.6 KB
Latonia, KY 1
1963 News Briefs. 1963-04   908.1 KB
Laurel, MT 3
1911 Automatic Signals on the Northern Pacific   6.3 MB
1961 News Briefs. 1961-06   718.3 KB
1961 News Briefs. 1961-07   654.1 KB
Laurel, Reading, PA 1
1955 The Reading has compact control machine for consolidated interlocking   511.5 KB
law 1
1919 Legal Decisions on the Use of Torpedoes for Signaling Purposes   355.6 KB
Lawrenceburg Jct., IN 1
1962 News Briefs. 1962-09   835.6 KB
Le Loup, KS 1
1922 Signal Construction on the Santa Fe   797.6 KB
Leavittsburg, OH 2
1936 Approach Electric Lighting On the Erie   2.7 MB
1942 Chicago's Newest Subway Has Automatic Block Signaling and Train Stop   457.5 KB
Lebanon Jct., KY 2
1946 CTC on 107 Miles of Single Track on the Louisville & Nashville   5.2 MB
1962 News Briefs. 1962-10   457.3 KB
Lebanon Jt., KY 1
1947 Annual Review and Outlook   425.1 KB
Lebanon, IN 1
1961 News Briefs. 1961-07   654.1 KB
Lebanon, MO 1
1947 Frisco Moves CTC to One Office   481.1 KB
Lebanon, PA 1
1961 Reading Improves 13 Crossings   739.0 KB
Leeds, England 1
1938 Relay Interlocking at Leeds   4.3 MB
Leeds, MO 2
1924 Controlled Manual Block Signaling With Train Control   5.5 MB
1947 Railroads Request Relief from the ICC Signal Order   365.7 KB
Lees Cross Roads, PA 2
1950 CTC on the Reading   6.6 MB
1963 News Briefs. 1963-12   422.5 KB
left-hand upper quadrant semaphores 1
1916 Reconstruction of New Haven Signals   315.5 KB
Lehi, Utah 1
1949 An Unusual Automatic Plant   4.5 MB
Lehigh Valley 21
1950 Centralized Train Dispatching   1.4 MB
1962 Electric Switch Lamp Lighting Helps Reduce Operating Expense   661.7 KB
1936 Flood Damage to Signaling   5.0 MB
1943 Herbert S. Balliet obituary   609.4 KB
1915 Jersey City Terminal Interlocking   1.1 MB
1925 Light Signals, Color, Position, or Color-Position   1.5 MB
1962 News Briefs. 1962-04   1.2 MB
1963 News Briefs. 1963-01   971.6 KB
1963 News Briefs. 1963-05   742.2 KB
1964 News Briefs. 1964-09   899.1 KB
1964 News Briefs. 1964-12   998.6 KB
1965 News Briefs. 1965-07   793.4 KB
1965 News Briefs. 1965-12   618.4 KB
1966 News Briefs. 1966-01   1.4 MB
1921 Proposed Modification of Stop-and-Proceed Rule   1.4 MB
1936 Railroads Clean Up After Flood Waters   33.3 MB
1930 Signal Aspects for a Four Block System   2.8 MB
1950 Temporary Change of Signal Controls   2.2 MB
1925 The Train Control Situation   853.0 KB
1926 Train Control Progress in 1925   3.1 MB
1923 Train-Order Signals at Interlockers   3.6 MB
Lehign Valley 2
1965 News Briefs. 1965-01   2.0 MB
1947 Relay Interlocking on Lehigh Valley   805.7 KB
Leipsic, OH 2
1932 Centralized Traffic Control on the Baltimore & Ohio   4.4 MB
1932 Electric Interlocking Constructed by the Nickel Plate   1.4 MB
Lena, IL 1
1962 News Briefs. 1962-02   1.4 MB
lengthening sidings 1
1964 What CTC Can Do For You   427.1 KB
Leningrad, Soviet Union 1
1964 Eight cities test automatic train operation   1.1 MB
Lennep, MT 1
1916 Signaling the Milwaukee's Electric Zone   624.8 KB
Lennoxville, Quebec 1
1927 Canadian Pacific Installs Remote Power Switch at Rebuilt Interlocker   2.2 MB
Lenox, IL 1
1923 News of the Month (October 1923)   1.9 MB
lenses 2
1936 Alining Signals on Curves   3.7 MB
1940 Signal Lens Cleaner   1.1 MB
Lethbridge, Alberta 1
1947 Canadian Pacific Installs Absolute Permissive Block   774.8 KB
letter 1
1956 The Crossing Accident Problem   986.5 KB
letter to the editor 1
1918 Mechanical Signaling   222.3 KB
Leverett Jct., IL 1
1947 False Clear Signal   1.0 MB
levermen 1
1945 The Leverman's Viewpoint   427.0 KB
Lewisport, KY 1
1947 CTC Down by the Ohio   2.7 MB
Lewistown, PA 2
1963 News Briefs. 1963-10   518.0 KB
1924 Results of Train Control Test on Pennsylvania   3.1 MB
Lewisville, AR 1
1946 CTC on 121 Miles of the Cotton Belt   6.4 MB
Lexington Avenue Line, Brooklyn, NY 1
1925 Automatic Interlocking of a Double Track Junction on BMT Lines   1.8 MB
Lexington, IL 1
1923 Chicago & Alton Installation of Train Control   1.4 MB
Libertyville, IL 1
1954 Automatic Gates Increase Safety   3.2 MB
lift bridge 1
1936 New Electro-Pneumatic Plant On Pennsylvania at Newark   23.9 MB
light out relays 1
1947 Light-out Protection at Home Signals   233.7 KB
light signals 1
1926 Scientific Study of Light Signals   3.3 MB
light-out circuits 4
1935 Avoiding Light-Out Signal Failures   2.2 MB
1935 Avoiding Light-Out Signal Failures   1.2 MB
1950 New Rules, Standards and Instructions Issued by the Interstate Commerce Commission   7.9 MB
1950 Rules, Standards and Instructions   1.5 MB
lightning 1
1925 A Study of the Causes of Lightning   2.0 MB
lightweight trains 4
1935 An Improved Track Circuit for Light-Weight Equipment   2.4 MB
1956 How to Control Signals Safely Where Lightweight Trains are Operated   8.4 MB
1937 Track Shunting Problems   947.3 KB
1937 Track Shunting Problems   2.5 MB
Lima, OH 3
1954 CTC Moves Heavy Trains   4.1 MB
1925 PRR construction (Lima, et al): News of the Month (July 1925)   675.8 KB
1952 Train Time Saved By New Interlocking and Automatic Protection at 15 Street Crossings in Lima, Ohio   4.4 MB
Limedale, IN 1
1940 Pennsylvania Installs Centralized Traffic Control On 69 Miles of Line   13.1 MB
Limeville, KY 1
1936 C&O Remote Control   12.8 MB
Limon, CO 2
1946 Polarized Coded Track and Control Circuits On the Rock Island   3.4 MB
1946 Rock Island Develops a Unique System of Single-Track Station-to Station Automatic Block Based on Coded Track Circuits Without Line Wires   8.3 MB
Lincoln, CA 2
1963 News Briefs. 1963-02   1.3 MB
1963 News Briefs. 1963-06   973.6 KB
Lincoln, NE 6
1955 CTC on single and double track   406.8 KB
1947 ICC Holds Signal Hearing   507.5 KB
1929 Interlocking Controlled Remotely   2.7 MB
1930 New Electric Interlocking on the Burlington Eliminates 160 Train Stops Per Day   2.8 MB
1947 Railroads Request Relief from the ICC Signal Order   365.7 KB
1935 Safety of High Speed Trains   5.2 MB
Lincoln, NJ 1
1937 Cut-Out Control for Crossing Signals   3.0 MB
Lindsay, VA 2
1928 C&O Signaling and Train Control Facilitate Operation   4.1 MB
1941 Centralized Traffic Control On the Chesapeake & Ohio   7.1 MB
line circuits 3
1935 Aerial Cable Versus Open Line   3.9 MB
1935 Pole Lines for Automatic Signaling   1.6 MB
1940 Southern Pacific Washes Insulators   1.5 MB
Linndale, OH 2
1930 Big Four Installs Simplified Interlocking With No Mechanical Locking   2.6 MB
1937 Route Control Interlocking – A New Signaling Development   2.9 MB
Linwood, NC 1
1963 News Briefs. 1963-02   1.3 MB
Litchfield & Madison 1
1937 Automatic Signals on Litchfield & Madison   3.5 MB
Lithonia, GA 1
1947 Automatic Block With Spring Switches installed on the Georgia Railroad   851.4 KB
Little Rock, AR 6
1964 MP interlocking uses solid-state control system   410.9 KB
1961 News Briefs. 1961-10   1.0 MB
1963 News Briefs. 1963-08   1.2 MB
1964 News Briefs. 1964-08   827.3 KB
1964 News Briefs. 1964-09   899.1 KB
1965 News Briefs. 1965-01   2.0 MB
Liverpool, IN 1
1925 PRR construction (Lima, et al): News of the Month (July 1925)   675.8 KB
Livingston, MT 4
1911 Automatic Signals on the Northern Pacific   6.3 MB
1961 News Briefs. 1961-02   1.4 MB
1961 News Briefs. 1961-06   718.3 KB
1961 News Briefs. 1961-07   654.1 KB
LM Cabin, Columbus, OH 1
1925 Traffic Reversal on Double Track by Signal Indication   1.5 MB
local control system 1
1964 Kinks   300.7 KB
Lock Haven, PA 1
1947 CTC Saves Train Time on the Pennsylvania   1.5 MB
Lockbourne, OH 1
1950 Remote Control of Center Sidings On Busy Double-Track Line   3.6 MB
locking 1
1956 Release of Locking   3.7 MB
Lockport, IL 1
1936 Semaphore Type Crossing Gate Developed on the Alton   8.3 MB
locomotive radio 2
1955 Modern communications essential to efficient railroading   696.7 KB
1955 Yard radio pays its way on the C&O   799.6 KB
Locust St., Philadelphia, PA 1
1961 Railroad Will Pay For CTC Out Of Accrued Savings   842.9 KB
Lodge, IL 1
1937 Signal Construction on the Wabash   12.2 MB
Lodgville, WV 1
1952 CTC Pays Its Way on B&O   733.2 KB
Logan Square, Chicago, IL 1
1964 News Briefs. 1964-08   827.3 KB
Logansport, IN 2
1940 11,000-Ft. Coded Track Circuits   13.6 MB
1961 News Briefs. 1961-11   1.3 MB
Lohman, MT 1
1932 Automatic Interlocking Protects End of Double Track   2.7 MB
London & North Eastern 4
1939 230 Routes In a Relay Interlocking   2.3 MB
1934 Highway Crossing Protection in England   1.3 MB
1935 Mechanical Color Light Signals in England   1.3 MB
1938 Relay Interlocking at Leeds   4.3 MB
London & North Western 1
1932 Speed Signaling in England   1.9 MB
London Metropolitan 1
1931 Metropolitan Railway of London Resignaling with Modern Equipment   1.8 MB
London North Eastern 1
1934 Re-Signaling the London North Eastern of England   3.0 MB
London Transport 2
1965 Japan, Sweden, England test ATO   6.3 MB
1964 News Briefs. 1964-06   820.5 KB
London Underground 1
1931 British Report on Automatic Train Control   2.6 MB
London, England 8
1931 British Report on Automatic Train Control   2.6 MB
1926 Four-Aspect Color-Light Signals Installed on English Road   2.8 MB
1965 Japan, Sweden, England test ATO   6.3 MB
1931 Metropolitan Railway of London Resignaling with Modern Equipment   1.8 MB
1936 New Interlocking Machines Abroad   1.3 MB
1963 News Briefs. 1963-05   742.2 KB
1964 News Briefs. 1964-06   820.5 KB
1934 Paddington Power Signaling   1.9 MB
London, Ontario 1
1962 Toronto Railway Conference – Automatic Train Operation   457.7 KB
Long Island 11
1934 Electro-Pneumatic Interlocking on the Long Island   3.8 MB
1950 Increasing Use of Carrier   1.3 MB
1943 Long Island Replaces Interlocking Machine   3.4 MB
1950 Microwaves on Railroads   1.3 MB
1962 News Briefs. 1962-01   979.5 KB
1963 News Briefs. 1963-02   1.3 MB
1963 News Briefs. 1963-04   908.1 KB
1965 News Briefs. 1965-08   753.7 KB
1939 Signaling the Pennsylvania to New York World's Fair   4.2 MB
1952 Speed Control Installed on the Long Island   1.3 MB
1923 Train-Order Signals at Interlockers   3.6 MB
Long Lake, MN 3
1955 How the Great Northern reduces accidents at highway crossings   425.6 KB
1947 ICC Holds Signal Hearing   507.5 KB
1947 Railroads Request Relief from the ICC Signal Order   365.7 KB
Longview, AL 1
1962 News Briefs. 1962-10   457.3 KB
Longview, TX 3
1948 New Signaling In Texas on Missouri Pacific Lines   1.8 MB
1949 Texas & Pacific New All-Relay Interlocking   4.3 MB
1944 Track Circuits on Passing Tracks in CTC Territory   941.8 KB
Loomis, CA 1
1911 The Staff System on the Southern Pacific   4.0 MB
Loree, L. F. 1
1928 Obituary: Frank P. Patenall   627.0 KB
Los Angeles Union Passenger Terminal 2
1939 Mission Tower Interlocking at Los Angeles   9.2 MB
1939 New Interlocking at Los Angeles   9.6 MB
Los Angeles, CA 11
1934 An Electric Interlocking on the Southern Pacific   1.8 MB
1935 Automatic Interlockings of Two Junctions Involving Spring Switches   8.9 MB
1947 ICC Holds Signal Hearing   507.5 KB
1939 Mission Tower Interlocking at Los Angeles   9.2 MB
1939 New Interlocking at Los Angeles   9.6 MB
1943 Pacific Electric Installs a Large All-Relay Interlocking   5.3 MB
1928 Pacific Electric Protects Subway Traffic With Signals and Train Stops   2.4 MB
1947 Railroads Request Relief from the ICC Signal Order   365.7 KB
1935 Safety of High Speed Trains   5.2 MB
1944 Santa Fe Installs CTC on 115.6 Miles Los Angeles to San Diego   7.2 MB
1936 Street Traffic Signals Controlled by Trains   5.1 MB
loss of shunt 2
1961 Loss of Shunt at Automatic Interlockings   195.5 KB
1965 What's the Answer? 1965-07   629.7 KB
Lost Nation, IA 1
1951 Single Track with CTC Replaces Double Track on Milwaukee   586.0 KB
Louisiana 1
1910 Interlocking Laws in the United States and Canada   821.1 KB
Louisiana & Arkansas 3
1936 New Electric Interlocking and Signaling at the Mississippi River Bridge at New Orleans   7.9 MB
1947 Railroads Request Relief from the ICC Signal Order   365.7 KB
1947 Territories Involved in the ICC Signaling Order   399.0 KB
Louisiana, MO 1
1923 CB&Q Installs New Light Signals   4.1 MB
Louisille, NE 1
1955 CTC on single and double track   406.8 KB
Louisville & Nashville 74
1943 A Review of 1942   2.9 MB
1911 A Summary of Signaling Practice   3.6 MB
1947 Annual Review and Outlook   425.1 KB
1937 Approach Indications to Train Order Signals   4.2 MB
1933 Are Switch Lamps Needed?   506.3 KB
1933 Automatic Operation   963.8 KB
1950 Bootleg Risers and Bonds   2.1 MB
1935 Checking Rail Ends on Drawbridges   2.5 MB
1927 Control of Stop Indication in Approach-Lighted Territory   972.5 KB
1932 Crossing Problem   2.6 MB
1947 CTC Down by the Ohio   2.7 MB
1954 CTC into Service   2.5 MB
1946 CTC on 107 Miles of Single Track on the Louisville & Nashville   5.2 MB
1931 Derails in Passing Sidings   1.1 MB
1915 Electric Interlocking at Aulon, Tennessee   882.6 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
1928 Emergency Release Circuits   2.4 MB
1944 Emergency Release for Switch Lock   1.3 MB
1950 Gate-Arm Stripe Colors   3.4 MB
1950 L&N Extends CTC on "EK"   10.4 MB
1944 L&N Installs CTC On an Engine District   9.0 MB
1916 Method for Checking Mechanical Locking   322.8 KB
1951 More Signal Construction in 1950   1.0 MB
1954 New Orleans Passenger Terminal   4.7 MB
1961 News Briefs. 1961-01   755.2 KB
1962 News Briefs. 1962-04   1.2 MB
1962 News Briefs. 1962-05   831.1 KB
1962 News Briefs. 1962-07   509.0 KB
1962 News Briefs. 1962-10   457.3 KB
1963 News Briefs. 1963-02   1.3 MB
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. 1964-02   997.7 KB
1964 News Briefs. 1964-08   827.3 KB
1965 News Briefs. 1965-01   2.0 MB
1965 News Briefs. 1965-02   1.9 MB
1965 News Briefs. 1965-05   1.4 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
1941 Non-Stop Permissive Signals   1.4 MB
1937 Ohio Flood Damages Signaling   9.7 MB
1939 Operation by Signal Indication on Single Track   846.7 KB
1931 Preparation of Signal Circuit Plans   2.0 MB
1943 Progress in the Use of Coded Track Circuits   1.6 MB
1926 Proper Lamps for Semaphore Night Lighting   1.4 MB
1921 Proposed Modification of Stop-and-Proceed Rule   1.4 MB
1929 Rear-End Flagging   745.4 KB
1936 Reducing Current at Flashing Relay Contacts   2.2 MB
1935 Removal of Switch Indicators   2.3 MB
1937 Report of Committee X – Signaling Practice   2.9 MB
1926 Semaphore or Light Signals?   1.4 MB
1930 Should Signal Clear?   1.2 MB
1928 Signal and Train Control Hearing Ends   2.0 MB
1922 Signal Indications Replace Train Orders   1.8 MB
1935 Signaling at Spring Switches   2.6 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
1926 Train Control Progress in 1925   3.1 MB
1920 Train Operation by Means of Signal Indications   2.4 MB
1935 Trap Circuits at Railroad Crossings   4.6 MB
1934 Use of Marker Lamps   516.1 KB
1956 Walkie-Talkies   1.5 MB
1937 Warning Time With Crossing Gates   1.3 MB
1964 What CTC Can Do For You   427.1 KB
1928 What Is to Be Gained by Train Stop or Train Control?   463.8 KB
1930 What Protection at Drawbridges?   3.5 MB
1920 What Scheme of Signaling is Most Desirable?   6.8 MB
1965 What's the Answer? 1965-07   629.7 KB
Louisville, KY 7
1947 CTC Down by the Ohio   2.7 MB
1937 Illumination as a Type of Crossing Protection   3.0 MB
1929 Manual Block Signals Controlled Remotely on the Big Four   1.1 MB
1949 New Interlocking in Louisville   5.3 MB
1965 News Briefs. 1965-12   618.4 KB
1937 Ohio Flood Damages Signaling   9.7 MB
1941 Pennsylvania Installs CTC at Louisville, KY   4.9 MB
Loveland, OH 2
1955 News Briefs. 1955-08   801.6 KB
1962 News Briefs. 1962-04   1.2 MB
Lovell, PA 1
1962 News Briefs. 1962-03   1.1 MB
Lowell Jct., MA 1
1965 News Briefs. 1965-01   2.0 MB
Lowell, MA 1
1965 News Briefs. 1965-01   2.0 MB
lower quadrant semaphores 1
1935 Obsolescence in Signaling   3.4 MB
Lucas, LA 1
1947 Railroads Request Relief from the ICC Signal Order   365.7 KB
Lucasville, OH 1
1950 Neon Lighting For Crossing Gate Arms   3.1 MB
Lucin cut-off 1
1913 New Signaling Across the Great Salt Lake   2.2 MB
Lucin, UT 2
1913 New Signaling Across the Great Salt Lake   2.2 MB
1947 Southern Pacific Installs CTC   990.2 KB
Ludington, MI 1
1955 CTC Saves Time for Freights On 135 Miles of Single Track   4.0 MB
Ludlow, KY 1
1954 Unique Combinations of Single-Track and Two-Track Developed on the Southern   3.8 MB
Luke, VA 1
1940 Centralized Traffic Control Solves Problem on the Norfolk & Western   7.5 MB
Lukey, Decatur, IL 1
1954 Wabash Yard Moves Expedited   1.2 MB
lunar white 10
1949 A Century of Signal Glass Developments   4.2 MB
1956 Burlington Has Compact Control Machine for Consolidation of 14 Interlockings   11.3 MB
1955 Crossing gate protection with indicators for train movements   432.4 KB
1935 Letter to the Editor- Comment on Multiple Aspects   1.5 MB
1950 Lunar White   419.3 KB
1935 Multiple Aspect Signaling   3.3 MB
1915 Red as a Danger Indication   283.5 KB
1937 Seaboard Utilizes Spring Switches   8.4 MB
1950 Spring Switch Signaling   2.5 MB
1949 Texas & Pacific New All-Relay Interlocking   4.3 MB
Lurgan, PA 1
1950 CTC on the Reading   6.6 MB
Lydale Jct., MN 1
1947 Automatic Signaling With Spring Switches Installed on the Great Northern   734.1 KB
Lyle, WA 1
1947 Signals and Slide Fences on the Spokane, Portland & Seattle   1.8 MB
Lynch, WY 1
1955 CTC and cab signaling on Union Pacific   789.5 KB
Lynchburg, VA 3
1941 CTC Installed on Norfolk & Western   5.1 MB
1950 Neon Lighting For Crossing Gate Arms   3.1 MB
1965 News Briefs. 1965-01   2.0 MB
Lyons, WA 2
1947 ICC Holds Signal Hearing   507.5 KB
1947 Railroads Request Relief from the ICC Signal Order   365.7 KB

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