what is it?
The Baldwin DRS-4-4-1500 was a diesel-electric locomotive of the road switcher type rated at 1,500-horsepower (1,100 kW), that rode on two-axle trucks, having a B-B wheel arrangement. It was manufactured by Baldwin Locomotive Works from 1947 until it was replaced in 1950 by the 1,600-horsepower (1,200 kW) AS-16. Nine railroads bought 35 locomotives, with five railroads later buying the successor model.
base stats
Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.
fun facts
- First built 79 years ago, in 1947.
- 1.1 MW is about 13 family cars (~85 kW each) flat out.
- Weighs about as much as 18 African elephants (~6 t each).
- 17.4 m long: about 4 cars parked nose to tail.
diesel locomotive: A diesel engine on board drives the wheels, usually through a generator (diesel-electric).
spec sheet
- built
- 1947–1950
- number built
- 35
- kind
- Diesel-electric
- traction
- diesel
- origin
- 🇺🇸 United States
- builders
- Baldwin Locomotive Works
- top speed
- 105 km/h
- power
- 1.1 MW
- gauge
- 1,435 mm standard gauge
- wheel arrangement
- Bo′Bo′
- length
- 17.4 m
- weight
- 109 t
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q4850540, Wikipedia: Baldwin DRS-4-4-1500 (CC BY-SA 4.0).Updated 2026-10-25.