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The earliest locomotives, such as Stephenson's Rocket, had no cab; the locomotive controls and a footplate for the crew were simply left open to the elements. However, to protect locomotive crews against adverse weather conditions, locomotives gradually came to be equipped with a roof and protective walls, and the expression "cab" refers to the cabin created by such an arrangement.
These locomotives are operated by Pacific National in Australia. In North American railroad terminology, a cab unit is a railroad locomotive with its own cab and controls. "Carbody unit" is a related term, which may be either a cabless booster unit controlled from a linked cab unit, or a cab unit that contains its own controls.
AAR control stand on an EMD DDA40X; Other EMD models are similar. A control stand is a diesel-electric locomotive subsystem which integrates engine functional controls and brake functional controls, [1] whereby all functional controls are "at hand" (within reach of the locomotive engineer from their customary seating position, facing forward at all times). [2]
In 2017, NCDOT started a Cab Control Unit (CCU) program using ex-GO F59PHs. [9] These are used on the Piedmont. In 2023, Amtrak began testing a former HHP-8 locomotive as a cab car with the aim of supplementing or replacing the existing ex-Metroliner cab cars until the Airo fleet arrives. [10] As of July 2024, eight total conversions are planned.
The broad nose occupies the entire width of the locomotive, and typically has an access door on the front of the nose. [1] The design may also be called a Canadian comfort cab, a North American safety cab, wide-nose, [2] [better source needed] or a wide cab (although the term wide cab is somewhat of a misnomer because it is the nose, not the ...
All models have chassis and running gear, generator, traction motors and controls from GE, and Ingersoll Rand provided its 10 × 12 diesel engine. [6] The principle of operation was the same as modern locomotives, [7] the diesel engine driving a main generator of 600 volts DC with four axle-hung traction motors. [8]
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An EMD SD40 A-unit owned by BNSF Railway. An A-unit, in railroad terminology, is a diesel locomotive (or more rarely an electric locomotive) equipped with a driving cab and a control system to control other locomotives in a multiple unit, and therefore able to be the lead unit in a consist of several locomotives controlled from a single position. [1]