A compartment at the front of a motor vehicle or locomotive where driver sits WordNet 3.0 & Open English WordNet

The cab, crew compartment or driver's compartment of a locomotive, or a self-propelled rail vehicle, is the part housing the train driver, fireman or secondman, and the controls necessary for the locomotive or self-propelled rail vehicle's operation. Wikipedia

The driving compartment of a locomotive Wikipedia Disambiguation

Driver's compartment of a locomotive or a self-propelled rail vehicle Wikidata

Compartment at the front of a truck or train for the driver. Wiktionary

Compartment. Wiktionary (translation)