80 mph order 1
Aberdeen, SD 2
absolute permissive block 1
all-relay interlocking 7
Alton 1
Americus, GA 1
Ames, GA 1
Arcadia, OH 1
Ashland, NE 1
Atchison, Topeka & Santa Fe 5
Atlanta, GA 1
Atlantic Coast Line 2
Augusta, GA 1
Aulon, TN 1
Aurora, IL 1
automatic block signaling 8
automatic interlocking 1
automatic train control 5
automatic train stop 6
Ayer, MA 1
Bakersfield, CA 2
Baltimore & Ohio 1
Barnett, GA 1
Barstow, CA 2
Batesville, AR 1
Baton Rouge, LA 1
Bellevue, OH 1
Bingham Canyon, UT 1
Birmingham, AL 1
Boston & Maine 3
Boston, MA 1
Branch Jct., IL 1
Brayton, RI 1
Breckenridge, MN 2
Bridge, UT 1
Bristol, VA 1
Bruceton, TN 1
C. K. Switch, ND 1
cab signaling 3
cab signals 2
Calumet River 1
Camak, GA 1
Canadian National 1
Canadian Pacific 2
Canadian, TX 1
Canby, WA 2
Canyon, TX 1
Carolina & Western Carolina 1
Central Jct., GA 1
Central of Georgia 1
centralized traffic control 9
Champaign, IL 1
Charlestown, OH 1
Chesapeake & Ohio 1
Cheyenne, WY 1
Chicago & Eastern Illinois 2
Chicago & Illinois Midland 1
Chicago & North Western 4
Chicago Great Western 1
Chicago, Burlington & Quincy 3
Chicago, IL 2
Chicago, Milwaukee, St. Paul & Pacific 4
Chicago, Rock Island & Pacific 4
Chicago, St. Paul, Minneapolis & Omaha 2
Clar, MO 1
Coalhurst, Alberta 1
coded track circuits 2
Coleman, FL 1
color light signals 4
Colorado & Southern 2
Columbus & Greenville 1
controlled automatic block signaling 2
controlled manual block signaling 2
Cory, IL 1
Council Bluffs, NA 1
Cranbrook, British Columbia 1
Crane, MO 1
Crowsnest, Alberta 1
Dalies, OK 1
Danville Jct., IL 1
Danville, IL 1
Denver & Rio Grande Western 1
Denver, CO 2
Depew, NY 1
DeQueen, AR 1
Detroit & Toledo Shore Line 1
Dexter Jct., MO 1
Diaz, AR 1
dragging equipment detector 1
drawbridge interlocking 1
Dunmore, Alberta 1
E. St. Louis, IL 1
El Reno, OK 1
electric interlocking 2
electric lock switches 1
electro-pneumatic interlocking 3
Elgin, Joliet & Eastern 1
Flag Center, IL 1
Florence, Italy 1
Florida East Coast 1
Forsyth, GA 1
Francis, MO 1
Ft. Worth & Denver City 1
Fullerton, CA 1
Gary, IN 1
General Railway Signal 10
Georgia 1
Gilman, IL 1
Gilmore Jct., NE 1
Grand Trunk Western 1
Great Northern 4
Groveton, GA 1
Gulf, Mobile & Ohio 2
Hamlet, NC 1
Herington, KS 1
highway crossings 1
highway grade crossings 1
Hoosac Tunnel 1
Hoosick Falls, NY 1
Houston, TX 1
Huntington, OR 2
Illinois Central 2
Illinois Terminal 1
interlocking 7
interlocking towers 1
International-Great Northern 1
Interstate Commerce Commission 5
Ironton, OH 1
Iselin, TN 1
Italy 1
Jackson, MS 1
Jacksonville, FL 1
Julesburg, CO 1
Kansas City Southern 2
Kansas City, MO 1
Kennecott Copper 1
Kirkwood, MO 1
La Junta, CO 1
Lebanon Jt., KY 1
Leeds, MO 1
Lethbridge, Alberta 1
Lincoln, NE 2
Lithonia, GA 1
Lock Haven, PA 1
Long Lake, MN 2
Los Angeles, CA 2
Louisiana & Arkansas 2
Louisville & Nashville 2
Lucas, LA 1
Lucin, UT 1
Lydale Jct., MN 1
Lyons, WA 2
Macon, GA 1
manual block remote control 1
manual block signaling 4
McElhany, MO 1
mechanical interlocking 1
Mechanicsville, NY 1
Miami, FL 1
Minneapolis, St. Paul & Sault Ste. Marie 2
Minot, ND 2
Missouri Pacific 2
Missouri-Kansas-Texas 1
Mobile, AL 1
Mobridge, SD 2
Mojave, CA 2
Mont, IL 1
motor car indicators 1
Mulvane, KS 1
Muphysville, IL 1
N. Slidell, LA 1
Nashville, Chattanooga & St. Louis 1
Nelson, British Columbia 1
Nelson, IL 1
Nevada, MO 1
New Haven, IN 1
New Orleans, LA 1
New Orleans, Texas & Mexico 1
New York Central 4
New York, Chicago & St. Louis 3
New York, New Haven & Hartford 1
Newton Falls, OH 1
Newton, KS 1
Niles Jct., OH 1
Nolan, ND 2
Norfolk & Western 4
Norfolk, VA 1
North Adams, MA 1
North La Crosse, WI 1
North Platte, NE 1
North Yard (Danville, IL) 1
Northern Pacific 1
Oakland, CA 2
Ogden, UT 2
Omaha, NE 1
Osawatomie, KS 1
Ottawa Jct., KS 1
Pacific Jct., IA 1
passenger trains 1
Pennsylvania 3
Penticton, British Columbia 1
Peoria & Eastern 1
Pere Marquette 1
Perry, TN 1
Pine Bluff, MO 1
Pocatello, ID 2
Poe, VA 1
Porter, L. B. 1
Portsmouth, OH 1
position light signals 1
Providence, RI 1
proximity detector 1
Pueblo, CO 1
Radford, VA 1
Ravenna, OH 1
Reading 1
Red Oak, IA 1
Redan, GA 1
remote control interlocking 2
Richmond, CA 1
Richmond, VA 1
Roanoke, VA 1
Rock Creek Jct., MO 1
Rocky Mount, NC 1
Rome, Italy 1
Rotterdam Jct. 1
route interlocking 1
Ruslor, MS 1
San Bernardino, CA 1
San Diego, CA 1
San Francisco, CA 1
Santa Ana, CA 1
Savanna, IL 1
Savannah, GA 1
Schenectady, NY 1
Seaboard Air Line 2
searchlight signals 11
semaphore signals 2
Shreveport, LA 1
Sinks, KY 1
Slaton, TX 1
slide detector fences 1
Soapstone, MA 1
Social Circle, GA 1
Sorrento, CA 1
South Chicago, IL 1
South Denver, CO 1
Southern 1
Southern Pacific 3
Spokane, Portland & Seattle 1
spring switches 2
St. Cloud, MN 1
St. Louis Southwestern 2
St. Louis Southwestern of Texas 1
St. Louis, Brownsville & Mexico 1
St. Louis, San Francisco & Texas 1
St. Louis-San Francisco 1
St. Paul, MN 2
station protection signal 1
Stockton, CA 2
switch machine 1
T. George Stiles 1
Tampa, FL 1
Temple, TX 1
Texas & Pacific 2
Texico, NM 1
Texmo Jct., LA 1
Trinidad, CO 1
Troy, NY 1
Tulsa, OK 1
Tyrone, PA 1
Union Pacific 3
Union Point, GA 1
Union Switch & Signal 10
Valrico, FL 1
Vancouver, British Columbia 1
Virginian 1
Wabash 3
Wallace, GA 1
Walsenburg, CO 1
Waynoka, OK 2
Wellington, KS 1
Wells, NE 1
West Chicago, IL 1
Western Pacific 3
Wheeling & Lake Erie 2
Willows, MA 1
Winford Jct., KY 1
Winnemucca, NE 1
Wisconsin Central 2

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