4-6-4

English thumb Noun Under the Whyte notation system, a steam locomotive that has four leading wheels arranged in a leading truck, six coupled driving wheels and four trailing wheels in a trailing truck. en 1954-01 H. P. White Vignettes of the Rail Railway Magazine 54, at Harmon station, New York No sooner had a waiting locomotive backed on to its train, the vociferous 4-6-4 or 4-8-4 re-emerged from under the bridge, and the two red marker lights on the last vehicles passed, than the headlight of the electric engine hauling the following train could be seen under the bridge and the waiting queue of locomotives had moved up one. en 1959-11 J. N. Westwood The Railways of Canada Trains Illustrated 552 Most Canadian engines are black. [...] The C.N.R. has only three classes of non-black engines, the "6400s", the later 4-8-2s and the 4-6-4s. Further reading en Rail transportation