Unless otherwise provided by law, these regulations apply to all travel for official business undertaken by officials and employees of units of the Executive Branch of the State government, except elected officials and officials and employees of the University of Maryland System, Morgan State University, and St. Mary's College of Maryland. If a contract specifically provides for their application, these regulations may apply to official business travel of persons performing a State contract. These regulations do not apply: When a line item in the annual State budget specifically identifies an item and amount for exemption. To State-owned, State-leased, or privately owned motor vehicles. Reimbursement to employees or officials who use State-owned, State-leased, or privately owned motor vehicles to conduct official business for the State is within the jurisdiction of the State Fleet Administrator, Department of Budget and Management, and subject to policies issued by the Secretary of Budget and Management.