Practice question

How should you park a CMV with air brakes?

Use the foot brake
Apply the parking brake (pull the yellow diamond knob out) once the vehicle has stopped, and chock the wheels if needed on a grade
Leave the air running
Use only the engine brake

Answer: B — Apply the parking brake (pull the yellow diamond knob out) once the vehicle has stopped, and chock the wheels if needed on a grade

The correct answer is shown above. Try the full quiz for additional practice.