AZL has released ALCO PA1 and PB1s. These are by far one of the most recognizable passenger locomotives to run on US rails. Between 1946 and 1953, a total of 297 locomotives were built. The locomotives were available as an A unit and a B unit. The PA1 could generate 2,000 horsepower and reach a maximum speed of 117mph.

The ALCO PA was a family of diesel locomotives built to haul passenger trains. The locomotives were built in Schenectady, New York, in the United States by a partnership of the American Locomotive Company (ALCO) and General Electric (GE) between June 1946 and December 1953.

ALCO's designation of P indicates that they were geared for higher speeds and passenger use, whereas the F designation marks these locomotives as being geared primarily for freight use.