Whyte classification
[ hwahyt, wahyt ]
/ ʰwaɪt, waɪt /
noun
a system for classifying steam locomotives according to the total number of wheels on the front trucks, drivers, and rear trucks, in that order. For example, a Pacific locomotive is designated as 4-6-2.
Origin of Whyte classification
after Frederic M.
Whyte, engineer for the New York Central Railroad c1900, who devised the system