4-4-6
A 4-4-6, in the Whyte notation for the classification of steam locomotives by wheel arrangement, is a locomotive with:
- four (4) leading wheels (at the front of the locomotive)
- four (4) driving wheels (2 axles) fixed in a rigid frame, and
- six (6) trailing wheels (normally mounted in a trailing truck).
Usage
= United States =
The Providence, Warren and Bristol railroad's No. 4 Annawamscutt was the only example of a 4-4-6 in the United States. It was rebuilt into a 0-4-4T in 1891.{{Cite web |title=Providence, Warren & Bristol 4-4-6 Locomotives in the USA |url=https://www.steamlocomotive.com/locobase.php?country=USA&wheel=4-4-6&railroad=pwb |access-date=2025-03-16 |website=www.steamlocomotive.com}}
= France =
The only example of this wheel arrangement in France was the Thuile locomotive.
Other equivalent classifications are:
- UIC classification: 2{{'}}B3{{'}} (also known as German classification
- Italian classification), and
- French classification: 223.
{{Whyte types}}