Speed Up or Slow Down
Back it down.
Slow down.
A headlight out.
Black eye.
10-4
OK, message received.
Big O
Omaha, Nebraska
Hammer down.
Go fast, step on it.
Driving the tractor only, without the trailer attached.
Bobtail.
Negatory.
Negative or no.
Music City
Nashville
Power Up
Go faster, speed up.
18-wheeler
Any tractor-trailor.
Breaking up.
Your radio/cell signal is weak, or fading.
Windy City
Chicago, Illinois