EMD GP30
Cab-equipped 'A' units

Railroad
Quantity
Road numbers
Notes
Electro Motive Division (demonstrator)
2
5629
to Union Pacific Railroad 875
Electro Motive Division (demonstrator)
2
5639
to Seaboard Air Line Railroad 534, to Seaboard Coast Line Railroad 1343
Alaska Railroad
1
2000
-
Atchison, Topeka and Santa Fe Railway
85
1200–1284
rebuilt versions called GP30u**upgraded at Cleburne, Texas shops.)
Atlantic Coast Line Railroad
9
900–908
to Seaboard Coast Line Railroad 1300–1308
Baltimore and Ohio Railroad
77
6900–6976
-
Chesapeake and Ohio Railway
48
3000–3047
-
Chicago, Burlington and Quincy Railroad
38
940–977
to Burlington Northern Railroad 2217–2254
Chicago and Eastern Illinois Railroad
3
239–241
-
Chicago Great Western Railway
8
201–208
to Chicago & North Western Railway 802–809
Chicago, Milwaukee, St. Paul and Pacific Railroad
16
340–355
AAR type B trucks. Renumbered 1000–1015
Chicago and North Western Railway
14
810–832
-
Canadian Pacific Railway
2
8200–8201
Built by General Motors Diesel (GMD) in London, Ontario. Renumbered 5000–5001
Denver and Rio Grande Western Railroad
28
3001–3028
-
Great Northern Railway
17
3000–3016
to Burlington Northern Railroad 2200–2216
Gulf, Mobile and Ohio Railroad
31
500–530
AAR type B trucks
Kansas City Southern Railway
20
100–119
-
Louisville and Nashville Railroad
58
1000–1057
-
New York Central Railroad
10
6115–6124
to Penn Central 2188-2197, to Conrail same numbers
New York, Chicago and St. Louis Railroad
10
900–909
to Norfolk and Western 2900-2909
Norfolk and Western Railway
44
522–565
High short hood, operated long hood-forward
Pennsylvania Railroad
52
2200–2251
to Penn Central 2200-2249, 2198, 2199; to Conrail same numbers
Phelps Dodge Corporation
9
24–32
New Cornelia Branch mine
Reading Railroad
20
5501–5520
renumbered 3600-3619; to Conrail 2168-2187
Seaboard Air Line Railroad
34
500–533
to Seaboard Coast Line Railroad 1309–1342
Soo Line Railroad
22
700–721
AAR type B trucks. Eighteen to Wisconsin Central Limited, same numbers
Southern Pacific Railroad
8
7400–7407
-
Southern Railway
120
2525–2644
High short hood
St. Louis Southwestern Railway
10
750–759
-
Toledo, Peoria and Western Railway
1
700
-
Union Pacific Railroad
111
700–735, 800–874
-
Totals
908
-
-

Question: What are the three railroads with the greatest number of units?
Answer: The Southern Railway has 120 units, Union Pacific Railroad has 111 units, and Atchison, Topeka, and Santa Fe Railroad has 85 units.