Header boards: Question Header boards: Answers Should never be used. Protect drivers from being hit by cargo. Protect drivers' heads when they are entering the cab of a truck. Explanation A header board protects a driver from moving cargo in the event of a crash or emergency stop. This questions appears in the following tests: Alabama Class B Knowledge Test Maine Class A Knowledge Test Michigan Class B Knowledge Test Mississippi Class B Knowledge Test Nevada Class B Knowledge Test North Carolina Class A Knowledge Test Rhode Island Class B Knowledge Test South Carolina Class A Knowledge Test Washington Class A Knowledge Test Wisconsin Class A Knowledge Test
