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. Take a FREE Practice Test Now This questions appears in the following tests: Colorado Knowledge Test Class A , Indiana Knowledge Test Class A , Kansas Knowledge Test Class B , North Dakota Knowledge Test Class B ,