Funds of the State Rail Section in excess of current needs, except as otherwise provided in any authorization for the issuance of railroad maintenance revenue bonds or in any trust agreement securing the same, may be invested by the West Virginia Investment Management Board as authorized to invest under 12-6-1 et seq. of this code. Income from all such investments of moneys in any fund shall be credited to such funds as the commissioner determines, subject to the provisions of any authorization or trust agreement and such investments may be sold at such times as the commissioner, determines.
