The members of the State Board of Technical and Adult Education who are in state employment shall serve without compensation but, subject to fund availability, shall be reimbursed by the state department in which employed for all necessary expenses that may be incurred in the performance of their duties under this article in accordance with state travel regulations promulgated by the Office of Planning and Budget and the Department of Audits and Accounts in the same manner that employees of the state merit system are reimbursed. For those State Board of Technical and Adult Education members who are not in state employment, the expense and mileage allowance shall be the same as that authorized for the General Assembly and shall be payable, subject to fund availability, by the State Board of Technical and Adult Education.