The Baldwin AS-16 was a diesel-electric locomotive 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 horsepower

Horsepower

Horsepower is the name of several units of measurement of power. The most common definitions equal between 735.5 and 750 watts.Horsepower was originally defined to compare the output of steam engines with the power of draft horses in continuous operation. The unit was widely adopted to measure the...

, that rode on two-axle trucks

Bogie

A bogie is a wheeled wagon or trolley. In mechanics terms, a bogie is a chassis or framework carrying wheels, attached to a vehicle. It can be fixed in place, as on a cargo truck, mounted on a swivel, as on a railway carriage/car or locomotive, or sprung as in the suspension of a caterpillar...

, having a B-B wheel arrangement. It was the successor to Baldwin's DRS-4-4-1500 model, and remained in the production until Baldwin-Lima-Hamilton quit the locomotive manufacturing business in 1956.

Nine railroads bought 127 locomotives, with five railroads having bought the previous model.

Original buyers

Railroad	Quantity	Road Numbers	Notes
Baltimore and Ohio Railroad Baltimore and Ohio Railroad The Baltimore and Ohio Railroad was one of the oldest railroads in the United States and the first common carrier railroad. It came into being mostly because the city of Baltimore wanted to compete with the newly constructed Erie Canal and another canal being proposed by Pennsylvania, which...	16	890–905	Renumbered 6200–6215; renumbered 2241–2239
Erie Railroad Erie Railroad The Erie Railroad was a railroad that operated in New York State, New Jersey, Pennsylvania, Ohio, Indiana, and Illinois, originally connecting New York City with Lake Erie...	16	1106–1120, 1140
Missouri-Kansas-Texas Railroad Missouri-Kansas-Texas Railroad The Missouri–Kansas–Texas Railroad was incorporated May 23, 1870. In its earliest days the MKT was commonly referred to as "the K-T", which was its stock exchange symbol; this common designation soon evolved into "the Katy"....	18	1571–1586, 1787–1788	Renumbered
Missouri Pacific Railroad Missouri Pacific Railroad The Missouri Pacific Railroad , also known as the MoPac, was one of the first railroads in the United States west of the Mississippi River. MoPac was a Class I railroad growing from dozens of predecessors and mergers, including the St. Louis, Iron Mountain and Southern Railway , Texas and Pacific...  (International-Great Northern Railroad International-Great Northern Railroad The International – Great Northern Railroad was a railroad that operated in the U.S. state of Texas. It was created on September 30, 1873, when International Railroad and Houston and Great Northern Railroad merged.... )	2	4195–4196
Missouri Pacific Railroad (St. Louis, Brownsville and Mexico Railway St. Louis, Brownsville and Mexico Railway The St. Louis, Brownsville & Mexico Railway was a 200-mile railroad that operated from Brownsville, Texas to Gulf Coast Junction in Houston. It passed through small southeast Texas communities such as Robstown, Corpus Christi, Bay City, and Harlingen as well as the Rio Grande Valley.-History:Uriah... )	6	4326–4331
New York, Chicago & St. Louis Railroad ("Nickel Plate Road")	4	320–323
Pennsylvania-Reading Seashore Lines Pennsylvania-Reading Seashore Lines Pennsylvania-Reading Seashore Lines was a railroad that operated in southern New Jersey in the 20th century. It was created as a joint venture of the Pennsylvania Railroad and the Reading Company .- History :...	16	6007–6016, 6022–6027
Minneapolis, St. Paul and Sault Ste. Marie Railroad Minneapolis, St. Paul and Sault Ste. Marie Railroad The Minneapolis, St. Paul and Sault Ste. Marie Railroad was a Class I railroad subsidiary of the Canadian Pacific Railway in the Midwest U.S. Commonly known as the Soo Line after the phonetic spelling of Sault, it was merged with several other major CP subsidiaries on January 1, 1961 to form the...  ("Soo Line")	2	379–380
Reading Company Reading Company The Reading Company , usually called the Reading Railroad, officially the Philadelphia and Reading Rail Road and then the Philadelphia and Reading Railway until 1924, operated in southeast Pennsylvania and neighboring states...	43	530–554, 560–563, 576–589
Western Maryland Railway Western Maryland Railway The Western Maryland Railway was an American Class I railroad which operated in Maryland, West Virginia, and Pennsylvania. It was primarily a coal hauling and freight railroad, with a small passenger train operation. The WM became part of the Chessie System in 1973 and ceased operating its lines...	4	173–176
Total	127