Regular public meetings of the county road administration board shall be held quarterly, at times and locations set by the board. At the summer meeting, the board shall elect a chair, a vice chair, and a second vice chair who shall hold office until the next summer meeting. Additional meetings necessary to discharge the business of the board may be called from time to time by the chair. Each member of the board shall be entitled to one vote. No proxies shall be allowed. All questions shall be decided by majority vote. A quorum of five members of the board shall be required to vote or conduct any board business.