4-4-4-4
Videos
A 4-4-4-4 steam locomotive, in the Whyte notation for describing locomotive wheel arrangements, has a four-wheel leading truck, two sets of four driving wheels, and a four-wheel trailing truck. While
The Baltimore and Ohio Railroad's #5600 George H. Emerson.
Rearward cylinders and gear of the sole N-1
The Pennsylvania Railroad's controversial class T1 duplex locomotive
Whyte notation
Videos
The Whyte notation is a classification method for locomotives based on wheel arrangement. While the Whyte notation is most commonly used when referring to steam locomotives, it can also be applied to
4-4-4-4
…A 4-4-4-4 steam locomotive, in the Whyte notation for describing locomotive wheel arrangements, has a four-wheel leading truck, two sets of four driving wheels, and a four-wheel trailing truck. While…
Whyte notation from a handbook for railroad industry workers published in 1906