My dad was a truck driver back in the day.
Well thank him for his service! Truck drivers are essential to our society, as raw materials need to be moved in great quantity.
I will tell him! I didn't know truck drivers were so important!
Trucks in general don't get enough love.  The majority of manufacturing goods is done by truck.
That is so interesting! I wonder how many people drive trucks for a living.
Truck driver
A truck driver (commonly referred to as a trucker, teamster or driver in the United States and Canada; a truckie in Australia and New Zealand; a lorry driver, or driver in Ireland, the United Kingdom, India, Nepal and Pakistan) is a person who earns a living as the driver of a truck (usually a semi truck, box truck or dump truck).
Duties and functions.
Truck drivers provide an essential service to industrialized societies by transporting finished goods and raw materials over
are set using a Johnson bar as referenced in Fred Eaglesmith's "Back There": "Hey Porter, tell that engineer, tell him this train's too slow. Tell him to let go that Johnson bar. I got places I got to go."
Many trucks and buses use a hand brake which is controlled with a Johnson bar. These are sometimes called "Johnson bar brakes".
Truck drivers call the lever control for air-operated trailer brakes "Johnson bars".
On Caterpillar tractors