Practice question

For a Maryland Class A combination the trailer air supply control?

Assume ABS permits tailgating or poor brake checks
The red trailer air supply control supplies trailer air when pushed in and shuts it off when pulled out.
Use the trailer hand valve for normal stops
Drive with trailer air pressure faults

Answer: B — The red trailer air supply control supplies trailer air when pushed in and shuts it off when pulled out.

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