Question Header boards: Answers Should never be used. Protect the driver from being hit by cargo. Protect the driver's head when entering the cab of a truck. Provide extra storage. Explanation Front-end header boards, also known as "headache racks," protect the driver from cargo moving in the event of a crash or emergency stop. This questions appears in the following tests: Alabama Class B Knowledge Test Colorado Class B Knowledge Test Florida Class A Knowledge Test Illinois Class A Knowledge Test Massachusetts Class B Knowledge Test Minnesota Double New Hampshire Class B Knowledge Test New York Class A Knowledge Test New York Class B Knowledge Test North Carolina Class A Knowledge Test Oregon Class B Knowledge Test Utah Class A Knowledge Test West Virginia Class A Knowledge Test Wisconsin Class B Knowledge Test