tillerman

plural tillermen

1. USA person who steers the rear wheels of a fire truck (a tiller truck) or controls its ladder

   That function was reserved for the tillerman (the man that sits at the top steering position at the rear of the aerial ladder).

   2003, Tom Zambrano, Warriors of Fire

   1 more example

   The driver in the back is called the tillerman. The tillerman steers the rear wheels, allowing the truck to turn onto narrow streets and alleys.

   2005, Justin T. Mayhue, Hagerstown Firefighting Through the Years