There are two types of drives which specialize in operating engines, buses and other vehicles.
The engine drivers (generally known as engineers in the US narration) drive and maintain the engines, and along with the firemen, keep the engine in control and provide a voice of reason when an engine is being difficult.
A North Western Railway steam engine driver's uniform consists of dark blue trousers, a black tie, a white shirt with a blue jacket with light blue accents over it and a blue peaked cap. This dress code is the same for drivers on the Arlesdale Railway.
Diesel engine drivers wear a similar, though less formal, uniform, with the Vicarstown Dieselworks logo on the jacket and a brown cap.
The drivers on the Skarloey Railway wear the same outfits, but in grey instead of blue.