#0214
Pennsylvania Railroad class D1
🇺🇸 United States ·built by Altoona Works· from 1868· class of 13 American 4-4-0 locomotives
1 photo from Wikimedia Commons · credits & licences
- 1. PRR D1 AirBrake: Westinghouse Air Brake Co.· Public domain
what is it?
The Pennsylvania Railroad's steam locomotive class D1 (formerly Class A, pre-1895) comprised thirteen 4-4-0 locomotives for express passenger service, constructed at the railroad's own Altoona Works (now owned by Norfolk Southern) during 1868–1872. They were the first standardized class of locomotives on the railroad and shared many parts with other standard classes. The PRR was the first American railroad to adopt the Westinghouse air brake, the first tests of which were made in September 1869; Class A locomotives were among those fitted with air brake equipment for those earliest tests.
who runs it
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 158 years ago, in 1868.
- Weighs about as much as 6 African elephants (~6 t each).
- 16.5 m long: about 4 cars parked nose to tail.
steam locomotive: Burns coal, wood or oil to boil water; the steam drives pistons that turn the wheels.
spec sheet
- built
- 1868–1872
- number built
- 13
- kind
- Steam
- traction
- steam
- origin
- 🇺🇸 United States
- builders
- Altoona Works
- operators
- Pennsylvania Railroad
- top speed
- —
- power
- —
- gauge
- 1,435 mm standard gauge
- wheel arrangement
- 4-4-0
- length
- 16.5 m
- weight
- 35.2 t
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q7120467, Wikipedia: Pennsylvania Railroad class D1 (CC BY-SA 4.0).Updated 2026-10-25.