The GE Dash 8-40B is a 4-axle diesel locomotive

Diesel locomotive

A diesel locomotive is a type of railroad locomotive in which the prime mover is a diesel engine, a reciprocating engine operating on the Diesel cycle as invented by Dr. Rudolf Diesel...

 built by GE Transportation Systems

GE Transportation Systems

GE Transportation, formerly known as GE Rail, is a division of General Electric. The organization manufactures equipment for the railroad, marine, mining, drilling and energy generation industries. It is based in Erie, Pennsylvania. Locomotives are assembled at the Erie plant, while engine...

 between 1988 and 1989. 150 examples of this locomotive were built for North American railroads. The GE Dash 8-40BW

GE Dash 8-40BW

The Dash 8-40BW, or B40-8W as some call it, is a four-axle road diesel locomotive built by GE Transportation Systems for the Atchison, Topeka and Santa Fe Railway in the early 1990s...

 (B40-8W) is a variant fitted with a full-width cab. Another variant is the GE Dash 8-40BP, more commonly known as the Genesis series. The locomotives in the Genesis series are the P40DC, the P42DC, and the P32ACDM.

Railroad	Quantity	Road numbers
Atchison, Topeka and Santa Fe Railway Atchison, Topeka and Santa Fe Railway The Atchison, Topeka and Santa Fe Railway , often abbreviated as Santa Fe, was one of the larger railroads in the United States. The company was first chartered in February 1859...	40	7410-7449
Conrail	30	5060-5089
General Electric	1	8002
New York, Susquehanna and Western Railway New York, Susquehanna and Western Railway The New York, Susquehanna and Western Railway , also known as the Susie-Q, or simply the Susquehanna, is a Class II American freight railway operating over 500 miles of track in the northeastern states of New York, Pennsylvania and New Jersey. It was formed in 1881 from the merger of several...	24	4002-4048 (even nos.)
St. Louis Southwestern Railway St. Louis Southwestern Railway The St. Louis Southwestern Railway , known by its nickname of "The Cotton Belt Route" or simply Cotton Belt, was organized on January 15, 1891, although it had its origins in a series of short lines founded in Tyler, Texas, in 1870 that connected northeastern Texas to Arkansas and southeastern...	54	8040-8093
United States Department of Energy United States Department of Energy The United States Department of Energy is a Cabinet-level department of the United States government concerned with the United States' policies regarding energy and safety in handling nuclear material...  (Savannah River Site Savannah River Site The Savannah River Site is a nuclear reservation in the United States in the state of South Carolina, located on land in Aiken, Allendale and Barnwell Counties adjacent to the Savannah River, southeast of Augusta, Georgia. The site was built during the 1950s to refine nuclear materials for... )	1	107