Practice question

Header boards:

  1. Should never be used.
  2. Protect the driver from being hit by cargo.
  3. Protect the driver's head when entering the cab of a truck.
  4. Provide extra storage.

Answer: B — Protect the driver from being hit by cargo.

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

Practice more: Massachusetts CDL Class B Knowledge Test 2 →