A1A-A1A

noun

A wheel arrangement for diesel and electric locomotives with two three-axle bogies / trucks, the two outer axles of each bogie are powered and the centre axle is unpowered.

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Meanings

nounA1A-A1A (countable and uncountable, plural A1A-A1As)

plural A1A-A1As

  1. uncountablerail transportA wheel arrangement for diesel and electric locomotives with two three-axle bogies / trucks, the two outer axles of each bogie are powered and the centre axle is unpowered.

    There are five double-bogie A1A-A1A British-built diesel-electric locomotives, which are normally worked back-to-back under the control of a single driver.

    1960 April 28, H. P. White, “The Railways of Sierra Leone”, in Railway Magazine, page 284
  2. countableA locomotive with this wheel arrangement.
Cite this entry
APA

A1A-A1A. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/A1A-A1A

MLA

“A1A-A1A.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/A1A-A1A. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “A1A-A1A,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/A1A-A1A.

Source: A1A-A1A on Wiktionary, CC BY-SA 4.0.