Haw. Rev. Stat. § 37-53

At any time during a fiscal year, notwithstanding any other law to the contrary, any department may, with the approval of the governor or the director of finance if so delegated by the governor, transfer from any special fund relating to such department to the general revenues of the State all or any portion of moneys determined to be in excess of fiscal year requirements for such special fund, except for special funds under the control of the department of transportation relating to highways, airports, transportation use, and harbors activities, special funds under the control of the Hawaii health systems corporation or subaccounts under the control of its regional system boards, and special funds of the University of Hawaii. At any time the department of transportation, with the approval of the governor or the director of finance if so delegated by the governor, may transfer from any special fund under the control of the department of transportation, or from any account within any such special fund, to the general revenues of the State or to any other special fund under the control of the department of transportation all or any portion of moneys determined to be in excess of requirements for the ensuing twelve months determined as prescribed by rules adopted pursuant to chapter 91; provided that no such transfer shall be made which would cause a violation of federal law or federal grant agreements.