Comfort cab

A comfort cab is a design found on most modern North American diesel locomotives, and some export models.

The basic shape of the comfort cab design first appeared on a hood unit, the EMD DDA40X, in 1969.

To denote the comfort cab locomotives, a "W" was often applied at the end of the model name (i.e. GP38-2W, GP40-2W, SD40-2W), although this was not an official designation.

The Montreal Locomotive Works also offered a competitive cab design on their M-420 and M-630(W) models.

In later years, the cab doors had improved weatherstripping and electrically heated windows installed.