We are agreed. There are some jerks in big rigs. (By the way, they anger the other drivers, too) There are some jerks on four wheels.
The point of this post is to remind people of some of the physical characteristics of handling a big, articulated (bends at the kingpin - that's a peg that drops into the fifth wheel - which is that horseshoe shaped thing on the back of a tractor that's bobtailing - it doesn't have a trailer hooked on to it) rig.
They are big. They need more room to make turns. They can't accelerate or slow down as quickly as smaller, lighter vehicles.
I had not realized, until I rode with DH, how many of these things I should have known BEFORE I had been with him in the truck.