All proceeds from the sale of bonds, except those derived from premiums and accrued interest, shall be available for the purpose provided in Section 4485 but shall not be available for transfer to the General Fund to pay principal and interest on bonds. The money in the fund may be expended only as herein provided.

(Added by Stats. 1986, Ch. 12, Sec. 1. Approved in Proposition 52 at the June 3, 1986, election.)