The Baldwin DRS-6-4-1500 was a diesel-electric locomotive

Locomotive

A locomotive is a railway vehicle that provides the motive power for a train. The word originates from the Latin loco – "from a place", ablative of locus, "place" + Medieval Latin motivus, "causing motion", and is a shortened form of the term locomotive engine, first used in the early 19th...

 of the road switcher

Road switcher

A road switcher is a type of railroad locomotive used for delivering or picking up cars outside of a railroad yard. Since the road switcher must work some distance away from a yard, it needs to be able to operate at road speeds, it must also have high-visibility while it is switching, and it must...

 type rated at 1600 hp, that rode on three-axle trucks, having an A1A-A1A wheel arrangement. It was introduced in 1946, and was replaced in Baldwin's catalog by the AS-416

Baldwin AS-416

The Baldwin AS-416 was a diesel-electric locomotive of the road switcher type rated at 1600 horsepower, that rode on three-axle trucks, having an A1A-A1A wheel arrangement....

 in 1950, but continued in production for export orders until 1952.

Used in much the same manner as its four-axle counterpart, the Baldwin DRS-4-4-1500, though the wheel arrangement spread out the axle load for operation on light rail such as are found on branch lines.

Ninety-one units were sold to ten railroads, but the model did far better in the export market than the domestic – 62 units to three North African countries, versus 29 units to seven railroads.

Original buyers

Railroad	Quantity	Road Numbers	Notes
Baldwin Locomotive Works Baldwin Locomotive Works The Baldwin Locomotive Works was an American builder of railroad locomotives. It was located in Philadelphia, Pennsylvania, originally, and later in nearby Eddystone, Pennsylvania. Although the company was very successful as a producer of steam locomotives, its transition to the production of...	2	1500	to Union Pacific Union Pacific Railroad The Union Pacific Railroad , headquartered in Omaha, Nebraska, is the largest railroad network in the United States. James R. Young is president, CEO and Chairman....  1250
		1501	to Kennecott Copper Corporation 901
Columbus and Greenville Railway Columbus and Greenville Railway There have been two uses of Columbus and Greenville Railway, both for the same rail line.-Original Columbus and Greenville:The first Columbus and Greenville Railway was formed by the sale of the Southern Railway operated Southern Railway in Mississippi, to local interests...	5	601–605
Chicago and North Western Railway Chicago and North Western Railway The Chicago and North Western Transportation Company was a Class I railroad in the Midwest United States. It was also known as the North Western. The railroad operated more than of track as of the turn of the 20th century, and over of track in seven states before retrenchment in the late 1970s...	1	1504
Norfolk Southern Railway Norfolk Southern Railway (former) The Norfolk Southern Railway was the final name of a railroad running from Norfolk, Virginia southwest and west to Charlotte, North Carolina. It was acquired by the Southern Railway in 1974, which was merged with the Norfolk and Western Railway in 1990 to form the current entity of the Norfolk...	10	1501–1510
Savannah and Atlanta Railway	8	100–107
Southern Pacific Company	3	5200–5202
Office des Chemins de fer Algériens SNTF National company for rail transport is Algeria's national railway operator. The SNTF, a state-owned company, currently has a monopoly over Algeria's network of , even though it is currently exploiting only...	43
Office National des Chemins de Fer du Maroc ONCF ONCF or ONCFM is Morocco's national railway operator. The Office employs around 9,767 employees and has a network of 1,907 km, all standard gauge...	15
Tunisian Railways Tunisian Railways The Société Nationale des Chemins de Fer Tunisiens , abbreviated SNCFT, is the national railway of Tunisia and under the direction of the Ministry of Transport. SNCFT was founded on December 27, 1956. Headquartered in Tunis the company employs about 6000 people...	4	040 DA 301–304
Total	91