Railway Signaling: 1957

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"ID" Tower, St. Louis, MO 1
Consolidation cuts costs   1.1 MB
"MS" Tower, St. Louis, MO 1
Consolidation cuts costs   1.1 MB
1957 1
1957 index   2.9 MB
absolute permissive block signaling 2
New control system for automatic block uses track circuits only   1.8 MB
Signal controls by track circuit only   575.8 KB
accident 1
ICC Reports on NYC wreck   205.5 KB
Albion, PA 1
Bessemer takes up second track and installs Centralized Traffic Control   700.5 KB
all-relay interlocking 4
Consolidation cuts costs   1.1 MB
Lehigh Valley combines interlockings   404.0 KB
More automation for signaling in 1957   1.2 MB
Two interlockings save time and money   547.8 KB
alternating current track circuits 1
Track circuit developments in Europe   234.8 KB
Ashland, KY 1
One Machine Controls Two Plants   2.2 MB
Ashtabula, OH 1
Where Two Tracks Do the Work of Four   3.2 MB
aspects and indications 5
How long sidings save train time   465.2 KB
How to make non-stop meet with CTC   576.9 KB
Two interlockings save time and money   547.8 KB
What's the Answer: Spring switches?   200.0 KB
Why Cotton Belt installed CTC on entire main line   914.0 KB
Association of American Railroads 1
Track circuit developments in Europe   234.8 KB
Atchison, Topeka & Santa Fe 3
How to make non-stop meet with CTC   576.9 KB
More automation for signaling in 1957   1.2 MB
What's the answer: Slotting relay?   361.2 KB
Atlanta, GA 1
More automation for signaling in 1957   1.2 MB
Atwater, MN 1
GN CTC's 175 miles of mainline   635.9 KB
audio frequency overlay track circuits 1
Bessemer takes up second track and installs Centralized Traffic Control   700.5 KB
Aurora, IL 1
More automation for signaling in 1957   1.2 MB
automatic block signaling 4
How to make non-stop meet with CTC   576.9 KB
Seaway diverts CN mainline   532.3 KB
Signal controls by track circuit only   575.8 KB
Why Cotton Belt installed CTC on entire main line   914.0 KB
automatic interlocking 1
Seaway diverts CN mainline   532.3 KB
automatic retarder yard 1
Automation yard control on the Pennsylvania   882.0 KB
automatic switching 1
Automation yard control on the Pennsylvania   882.0 KB
automatic train identification 1
More automation for signaling in 1957   1.2 MB
automatic train stop 3
How to make non-stop meet with CTC   576.9 KB
ICC Reports on NYC wreck   205.5 KB
Lehigh Valley has check-in, check-out   755.3 KB
automation 1
More automation for signaling in 1957   1.2 MB
axle counters 1
Track circuit developments in Europe   234.8 KB
Baltimore & Ohio 1
Traffic signals and crossing gates coordinated in Cumberland, MD   730.3 KB
Bangor & Aroostook 1
BAR takes up second track and installs CTC   706.6 KB
Bay View, NY 1
Where Two Tracks Do the Work of Four   3.2 MB
Beaumont, CA 1
How long sidings save train time   465.2 KB
Belgium 1
Track circuit developments in Europe   234.8 KB
Belt Railway of Chicago 1
Relay Interlocking Saves Time at Yard Entrances   2.5 MB
Bessemer & Lake Erie 2
Bessemer takes up second track and installs Centralized Traffic Control   700.5 KB
More automation for signaling in 1957   1.2 MB
Big Four 1
More automation for signaling in 1957   1.2 MB
Big Sandy Jct., KY 1
One Machine Controls Two Plants   2.2 MB
Boston & Albany 1
More automation for signaling in 1957   1.2 MB
Boston & Maine 2
Elevation causes signal changes   893.2 KB
More automation for signaling in 1957   1.2 MB
Breckenridge, MN 1
GN CTC's 175 miles of mainline   635.9 KB
Brinkley, AR 1
Why Cotton Belt installed CTC on entire main line   914.0 KB
Buffalo, NY 1
More automation for signaling in 1957   1.2 MB
call-on signals 1
How long sidings save train time   465.2 KB
Canadian National 3
More automation for signaling in 1957   1.2 MB
Seaway diverts CN mainline   532.3 KB
Why not more Centralized Traffic Control?   344.2 KB
Canadian Pacific 2
Seaway diverts CN mainline   532.3 KB
Survey shows progress in signal education   330.6 KB
Cannneaut, OH 1
Bessemer takes up second track and installs Centralized Traffic Control   700.5 KB
Central Vermont 1
Two interlockings save time and money   547.8 KB
centralized traffic control 13
BAR takes up second track and installs CTC   706.6 KB
Bessemer takes up second track and installs Centralized Traffic Control   700.5 KB
CTC on the SP has special devices   518.8 KB
Elevation causes signal changes   893.2 KB
GN CTC's 175 miles of mainline   635.9 KB
How long sidings save train time   465.2 KB
How to make non-stop meet with CTC   576.9 KB
More automation for signaling in 1957   1.2 MB
Pushbutton CTC Machine on NYC Is First of Its Kind   3.3 MB
Signal controls by track circuit only   575.8 KB
Where Two Tracks Do the Work of Four   3.2 MB
Why Cotton Belt installed CTC on entire main line   914.0 KB
Why not more Centralized Traffic Control?   344.2 KB
Chesapeake & Ohio 2
More automation for signaling in 1957   1.2 MB
One Machine Controls Two Plants   2.2 MB
Chicago Transit Authority 1
More automation for signaling in 1957   1.2 MB
Chicago, Burlington & Quincy 1
More automation for signaling in 1957   1.2 MB
Chicago, IL 2
More automation for signaling in 1957   1.2 MB
Relay Interlocking Saves Time at Yard Entrances   2.5 MB
Chicago, Milwaukee, St. Paul & Pacific 1
Survey shows progress in signal education   330.6 KB
Clearing, Chicago, IL 1
Relay Interlocking Saves Time at Yard Entrances   2.5 MB
Cleveland, Cincinnati, Chicago & St. Louis 1
More automation for signaling in 1957   1.2 MB
Cleveland, OH 1
More automation for signaling in 1957   1.2 MB
Clyffeside, KY 1
One Machine Controls Two Plants   2.2 MB
code line 1
CTC on the SP has special devices   518.8 KB
coded track circuits 3
Bessemer takes up second track and installs Centralized Traffic Control   700.5 KB
New control system for automatic block uses track circuits only   1.8 MB
Signal controls by track circuit only   575.8 KB
color light signals 1
Lehigh Valley combines interlockings   404.0 KB
Colton, CA 1
How long sidings save train time   465.2 KB
consolidation of interlocking towers 1
More automation for signaling in 1957   1.2 MB
Conway, PA 1
Automation yard control on the Pennsylvania   882.0 KB
Cornwall, Ontario 1
Seaway diverts CN mainline   532.3 KB
Corsicana, TX 1
Why Cotton Belt installed CTC on entire main line   914.0 KB
Cotton Belt 1
Why Cotton Belt installed CTC on entire main line   914.0 KB
Coxton, PA 1
Lehigh Valley combines interlockings   404.0 KB
Cumberland, MD 1
Traffic signals and crossing gates coordinated in Cumberland, MD   730.3 KB
Delano, MN 1
GN CTC's 175 miles of mainline   635.9 KB
Delaware, Lackawanna & Western 1
Lehigh Valley combines interlockings   404.0 KB
Dexter Jct., MO 1
Why Cotton Belt installed CTC on entire main line   914.0 KB
distant signals 1
How long sidings save train time   465.2 KB
Dock Jct., PA 1
Where Two Tracks Do the Work of Four   3.2 MB
Doran, MN 1
GN CTC's 175 miles of mainline   635.9 KB
dragging equipment detectors 1
CTC on the SP has special devices   518.8 KB
drill signals 1
Consolidation cuts costs   1.1 MB
Eads Bridge, St. Louis, MO 1
Consolidation cuts costs   1.1 MB
earthquake detectors 1
CTC on the SP has special devices   518.8 KB
East St. Louis, IL 2
Consolidation cuts costs   1.1 MB
Why Cotton Belt installed CTC on entire main line   914.0 KB
electric lock switches 1
GN CTC's 175 miles of mainline   635.9 KB
electric slot 1
What's the answer: Slotting relay?   361.2 KB
electro-pneumatic interlocking 1
One Machine Controls Two Plants   2.2 MB
electro-pneumatic switches 1
Bessemer takes up second track and installs Centralized Traffic Control   700.5 KB
electronic track circuits 1
Track circuit developments in Europe   234.8 KB
Elkhart, IN 1
Pushbutton CTC Machine on NYC Is First of Its Kind   3.3 MB
Erie, PA 2
Bessemer takes up second track and installs Centralized Traffic Control   700.5 KB
Where Two Tracks Do the Work of Four   3.2 MB
facing point locks 1
What's the Answer: Spring switches?   200.0 KB
false proceed failures 1
Increase in signal failures reported by ICC Bureau of Safety   652.1 KB
false restrictive failures 1
Increase in signal failures reported by ICC Bureau of Safety   652.1 KB
Filer, PA 1
Bessemer takes up second track and installs Centralized Traffic Control   700.5 KB
Fresno, CA 1
How to make non-stop meet with CTC   576.9 KB
General Railway Signal 12
BAR takes up second track and installs CTC   706.6 KB
Elevation causes signal changes   893.2 KB
GN CTC's 175 miles of mainline   635.9 KB
Lehigh Valley combines interlockings   404.0 KB
Lehigh Valley has check-in, check-out   755.3 KB
New control system for automatic block uses track circuits only   1.8 MB
Pushbutton CTC Machine on NYC Is First of Its Kind   3.3 MB
Seaway diverts CN mainline   532.3 KB
Signal controls by track circuit only   575.8 KB
Traffic signals and crossing gates coordinated in Cumberland, MD   730.3 KB
Two interlockings save time and money   547.8 KB
Where Two Tracks Do the Work of Four   3.2 MB
Germany 1
Track circuit developments in Europe   234.8 KB
Girard Jct., PA 1
Where Two Tracks Do the Work of Four   3.2 MB
grade separation 1
Elevation causes signal changes   893.2 KB
Grand Trunk Western 1
More automation for signaling in 1957   1.2 MB
Great Britain 1
Track circuit developments in Europe   234.8 KB
Great Northern 2
GN CTC's 175 miles of mainline   635.9 KB
More automation for signaling in 1957   1.2 MB
Griswold Signal 1
CTC on the SP has special devices   518.8 KB
Hancock, MN 1
GN CTC's 175 miles of mainline   635.9 KB
Harbor Creek, PA 1
Where Two Tracks Do the Work of Four   3.2 MB
Hazelton, PA 1
Lehigh Valley has check-in, check-out   755.3 KB
Helena, MT 1
More automation for signaling in 1957   1.2 MB
high-speed turnouts 1
How to make non-stop meet with CTC   576.9 KB
highway crossing 1
Lehigh Valley combines interlockings   404.0 KB
highway crossings 6
CTC on the SP has special devices   518.8 KB
Elevation causes signal changes   893.2 KB
How to make non-stop meet with CTC   576.9 KB
More automation for signaling in 1957   1.2 MB
Track circuit developments in Europe   234.8 KB
Traffic signals and crossing gates coordinated in Cumberland, MD   730.3 KB
Illinois Central 1
Survey shows progress in signal education   330.6 KB
Illmo, MO 1
Why Cotton Belt installed CTC on entire main line   914.0 KB
index 1
1957 index   2.9 MB
Indio, CA 1
How long sidings save train time   465.2 KB
inductive check-in, check-out system 1
Lehigh Valley has check-in, check-out   755.3 KB
interlocking 8
Consolidation cuts costs   1.1 MB
Elevation causes signal changes   893.2 KB
Lehigh Valley combines interlockings   404.0 KB
More automation for signaling in 1957   1.2 MB
One Machine Controls Two Plants   2.2 MB
Relay Interlocking Saves Time at Yard Entrances   2.5 MB
Seaway diverts CN mainline   532.3 KB
Two interlockings save time and money   547.8 KB
intermittent inductive automatic train stop 1
Lehigh Valley has check-in, check-out   755.3 KB
Interstate Commerce Commission 2
ICC Reports on NYC wreck   205.5 KB
Increase in signal failures reported by ICC Bureau of Safety   652.1 KB
Jonesboro, AR 1
Why Cotton Belt installed CTC on entire main line   914.0 KB
Lehigh Valley 1
Lehigh Valley has check-in, check-out   755.3 KB
Lehighton, PA 1
Lehigh Valley has check-in, check-out   755.3 KB
Lehing Valley 1
Lehigh Valley combines interlockings   404.0 KB
letter to the editor 1
Letter to the editor: signal checking circuit used in the Netherlands   225.9 KB
Livingston, MT 1
More automation for signaling in 1957   1.2 MB
long sidings 2
How long sidings save train time   465.2 KB
How to make non-stop meet with CTC   576.9 KB
Louisville & Nashville 2
Kinks. Testing "KP" relays   191.2 KB
More automation for signaling in 1957   1.2 MB
Lucas, LA 1
Signal controls by track circuit only   575.8 KB
lunar white 1
How long sidings save train time   465.2 KB
manual block 2
Lehigh Valley has check-in, check-out   755.3 KB
Letter to the editor: signal checking circuit used in the Netherlands   225.9 KB
manual block remote control 1
More automation for signaling in 1957   1.2 MB
manual block signaling 1
Bessemer takes up second track and installs Centralized Traffic Control   700.5 KB
Meadville Jct., PA 1
Bessemer takes up second track and installs Centralized Traffic Control   700.5 KB
mechanical interlocking 1
Lehigh Valley combines interlockings   404.0 KB
mechanical semaphores 1
What's the answer: Slotting relay?   361.2 KB
Michigan Central 1
More automation for signaling in 1957   1.2 MB
Missouri Pacific 3
More automation for signaling in 1957   1.2 MB
Survey shows progress in signal education   330.6 KB
Why Cotton Belt installed CTC on entire main line   914.0 KB
Morris, MN 1
GN CTC's 175 miles of mainline   635.9 KB
Morrisburg, Ontario 1
Seaway diverts CN mainline   532.3 KB
motor car indicators 1
How to make non-stop meet with CTC   576.9 KB
Mt. Pleasant, TX 1
Why Cotton Belt installed CTC on entire main line   914.0 KB
Nashville, Chattanooga & St. Louis 1
More automation for signaling in 1957   1.2 MB
Netherlands 2
Letter to the editor: signal checking circuit used in the Netherlands   225.9 KB
Track circuit developments in Europe   234.8 KB
Netherlands Railways 1
Letter to the editor: signal checking circuit used in the Netherlands   225.9 KB
New York Central 4
ICC Reports on NYC wreck   205.5 KB
More automation for signaling in 1957   1.2 MB
Pushbutton CTC Machine on NYC Is First of Its Kind   3.3 MB
Where Two Tracks Do the Work of Four   3.2 MB
New York City Transit 2
More automation for signaling in 1957   1.2 MB
What's the answer: Slotting relay?   361.2 KB
New York, NY 1
More automation for signaling in 1957   1.2 MB
Niland, CA 1
How long sidings save train time   465.2 KB
Norfolk & Western 1
Survey shows progress in signal education   330.6 KB
North Bessemer, PA 1
Bessemer takes up second track and installs Centralized Traffic Control   700.5 KB
North Junction IL 1
Why Cotton Belt installed CTC on entire main line   914.0 KB
North Platte, NE 1
More automation for signaling in 1957   1.2 MB
Northern Maine Jct., ME 1
BAR takes up second track and installs CTC   706.6 KB
Northern Pacific 1
More automation for signaling in 1957   1.2 MB
Nottingham, OH 1
Where Two Tracks Do the Work of Four   3.2 MB
Ontario Northland 1
Survey shows progress in signal education   330.6 KB
Palm Springs, CA 1
How long sidings save train time   465.2 KB
Paragould, AR 1
Why Cotton Belt installed CTC on entire main line   914.0 KB
Pennock, MN 1
GN CTC's 175 miles of mainline   635.9 KB
Pennsylvania 3
Automation yard control on the Pennsylvania   882.0 KB
More automation for signaling in 1957   1.2 MB
Survey shows progress in signal education   330.6 KB
Pine Bluff, AR 1
Why Cotton Belt installed CTC on entire main line   914.0 KB
Pittsburgh & Lake Erie 1
More automation for signaling in 1957   1.2 MB
Pittsburgh, PA 1
More automation for signaling in 1957   1.2 MB
Pittston Jct., PA 1
Lehigh Valley combines interlockings   404.0 KB
Poplar St., St. Louis, MO 1
Consolidation cuts costs   1.1 MB
power switches 2
Two interlockings save time and money   547.8 KB
Why Cotton Belt installed CTC on entire main line   914.0 KB
Reading 1
Survey shows progress in signal education   330.6 KB
relay interlocking 1
Relay Interlocking Saves Time at Yard Entrances   2.5 MB
remote-control interlocking 1
Two interlockings save time and money   547.8 KB
Richmond, Fredericksburg & Potomac 1
Survey shows progress in signal education   330.6 KB
Ripley, NY 1
ICC Reports on NYC wreck   205.5 KB
route interlocking 2
Consolidation cuts costs   1.1 MB
More automation for signaling in 1957   1.2 MB
Russell, KY 1
More automation for signaling in 1957   1.2 MB
Seaboard Air Line 1
More automation for signaling in 1957   1.2 MB
searchlight signals 3
GN CTC's 175 miles of mainline   635.9 KB
How to make non-stop meet with CTC   576.9 KB
Seaway diverts CN mainline   532.3 KB
self-propelled cars 1
Lehigh Valley has check-in, check-out   755.3 KB
semi-automatic signaling 1
What's the answer: Slotting relay?   361.2 KB
Shreveport, LA 1
Signal controls by track circuit only   575.8 KB
shunting sensitivity 2
Lehigh Valley has check-in, check-out   755.3 KB
Track circuit developments in Europe   234.8 KB
Siemens manual block 1
Letter to the editor: signal checking circuit used in the Netherlands   225.9 KB
signal education 1
Survey shows progress in signal education   330.6 KB
signal slot 1
What's the answer: Slotting relay?   361.2 KB
snow melters 3
Bessemer takes up second track and installs Centralized Traffic Control   700.5 KB
GN CTC's 175 miles of mainline   635.9 KB
More automation for signaling in 1957   1.2 MB
South La Grange, ME 1
BAR takes up second track and installs CTC   706.6 KB
Southern 1
More automation for signaling in 1957   1.2 MB
Southern Pacific 5
CTC on the SP has special devices   518.8 KB
How long sidings save train time   465.2 KB
More automation for signaling in 1957   1.2 MB
Survey shows progress in signal education   330.6 KB
What's the answer: Slotting relay?   361.2 KB
spring switches 2
More automation for signaling in 1957   1.2 MB
What's the Answer: Spring switches?   200.0 KB
St. Albans, VT 1
Two interlockings save time and money   547.8 KB
St. Lawrence Seaway 1
Seaway diverts CN mainline   532.3 KB
St. Louis Southwestern 2
Survey shows progress in signal education   330.6 KB
Why Cotton Belt installed CTC on entire main line   914.0 KB
St. Louis, MO 1
Consolidation cuts costs   1.1 MB
St. Louis-San Francisco 2
More automation for signaling in 1957   1.2 MB
Survey shows progress in signal education   330.6 KB
Stockton, CA 1
How to make non-stop meet with CTC   576.9 KB
Style "KP" relays 1
Kinks. Testing "KP" relays   191.2 KB
switchtenders 1
Two interlockings save time and money   547.8 KB
Switzerland 1
Track circuit developments in Europe   234.8 KB
Terminal Association of St. Louis 2
Consolidation cuts costs   1.1 MB
Survey shows progress in signal education   330.6 KB
Texarkana, AR 1
Why Cotton Belt installed CTC on entire main line   914.0 KB
Texas & Pacific 2
New control system for automatic block uses track circuits only   1.8 MB
Signal controls by track circuit only   575.8 KB
Texmo Jct., LA 1
Signal controls by track circuit only   575.8 KB
Thebes, IL 1
Why Cotton Belt installed CTC on entire main line   914.0 KB
Toledo, OH 1
Pushbutton CTC Machine on NYC Is First of Its Kind   3.3 MB
track circuits 1
Track circuit developments in Europe   234.8 KB
track instruments 1
Track circuit developments in Europe   234.8 KB
traffic signals 1
Traffic signals and crossing gates coordinated in Cumberland, MD   730.3 KB
train interference 1
Why not more Centralized Traffic Control?   344.2 KB
Trakode 2
New control system for automatic block uses track circuits only   1.8 MB
Signal controls by track circuit only   575.8 KB
Transport Products 1
Traffic signals and crossing gates coordinated in Cumberland, MD   730.3 KB
Tyler, TX 1
Why Cotton Belt installed CTC on entire main line   914.0 KB
Union Pacific 2
More automation for signaling in 1957   1.2 MB
Survey shows progress in signal education   330.6 KB
Union Route interlocking 1
Consolidation cuts costs   1.1 MB
Union Switch & Signal 9
Automation yard control on the Pennsylvania   882.0 KB
Bessemer takes up second track and installs Centralized Traffic Control   700.5 KB
Consolidation cuts costs   1.1 MB
CTC on the SP has special devices   518.8 KB
How to make non-stop meet with CTC   576.9 KB
Kinks. Testing "KP" relays   191.2 KB
One Machine Controls Two Plants   2.2 MB
Relay Interlocking Saves Time at Yard Entrances   2.5 MB
Why Cotton Belt installed CTC on entire main line   914.0 KB
vane relays 1
Track circuit developments in Europe   234.8 KB
Wabash 2
More automation for signaling in 1957   1.2 MB
Survey shows progress in signal education   330.6 KB
Western Railroad Supply 1
CTC on the SP has special devices   518.8 KB
Willmar, MN 1
GN CTC's 175 miles of mainline   635.9 KB
Winchester, MA 1
Elevation causes signal changes   893.2 KB
yard track indicators 1
How to make non-stop meet with CTC   576.9 KB
Youngstown, OH 1
More automation for signaling in 1957   1.2 MB
Yuma, AZ 1
How long sidings save train time   465.2 KB

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