The Whyte notation is a classification method for steam locomotives, and some internal combustion locomotives and electric locomotives, by wheel arrangement. It was devised by Frederick Methvan Whyte, and came into use in the early twentieth century following a December 1900 editorial in American Engineer and Railroad Journal.
Whyte notation from a handbook for railroad industry workers published in 1906
An electric locomotive is a locomotive powered by electricity from overhead lines, a third rail or on-board energy storage such as a battery or a supercapacitor. Locomotives with on-board fuelled prime movers, such as diesel engines or gas turbines, are classed as diesel-electric or gas turbine-electric and not as electric locomotives, because the electric generator/motor combination serves only as a power transmission system.
Electric locomotive Škoda ChS4-109. The Moscow–Odesa train in Vinnytsia railway station.
The ČSD Class E 499.3
The Siemens ES64U4 is the current confirmed holder as the fastest electric locomotive at 357 km/h (222 mph) in 2006.
A British Rail Class 91 at London King's Cross station.