4-6-4-4
In Whyte notation, a 4–6–4–4 is a railroad steam locomotive that has four leading wheels followed by six coupled driving wheels, a second set of four driving wheels and four trailing wheels.
| Steam locomotive types |
| Single engine types |
| 0–2–2, 2–2–0, 2–2–2, 2–2–4, 4–2–0, 4–2–2, 4–2–4, 6–2–0 |
| 0–4–0, 0–4–2, 0–4–4, 2–4–0, 2–4–2, 2–4–4, 4–4–0, 4–4–2, 4–4–4 |
| 0–6–0, 0–6–2, 0–6–4, 2–6–0, 2–6–2, 2–6–4, 4–6–0, 4–6–2, 4–6–4 |
| 0–8–0, 0–8–2, 2–8–0, 2–8–2, 2–8–4, 4–8–0, 4–8–2, 4–8–4, 6–8–6 |
| 0–10–0, 0–10–2, 2–10–0, 2–10–2, 2–10–4, 4–10–0, 4–10–2 |
| 0–12–0, 2–12–2, 4–12–2 |
| Duplex engine types |
| 4–4–4–4, 6–4–4–6, 4–4–6–4, 4–6–4–4 |
| Mallet (articulated) types |
| 0–4–4–0, 2–4–4–2 |
| 0–6–6–0, 2–6–6–2, 2–6–6–4, 2–6–6–6, 4–6–6–4 |
| 0–8–8–0, 2–8–8–0, 2–8–8–2, 2–8–8–4, 4–8–8–2, 4–8–8–4 |
| 2–10–10–2, 2–8–8–8–2, 2–8–8–8–4 |
Categories: Rail stubs | Locomotives