Question A header board is used to: Answers Allow a driver to see behind them. Protect the driver from moving cargo. Provide extra storage capacity. Prevent the driver from leaving the tractor. Explanation Front-end header boards, also known as "headache racks," protect drivers from moving cargo in the event of a crash or emergency stop. This questions appears in the following tests: Colorado Class B Knowledge Test District Of Columbia Class B Knowledge Test Florida Class B Knowledge Test Indiana Class B Knowledge Test New Hampshire Class B Knowledge Test North Carolina Class A Knowledge Test North Carolina Class B Knowledge Test North Dakota Class B Knowledge Test North Dakota Tank Tennessee Class B Knowledge Test