248 LAWS OF MARYLAND. [CH. 114

things and acts necessary in the construction or acquisition,
maintenance and operation of the bridge to the end that
the bridge may become and be operated free of tolls as
early as possible and practicable, subject only to the ex-
press limitations of this sub-title and the limitations of
other laws and constitutional provisions applicable thereto.

64CC. Bridge Revenue Refunding Bonds. The Com-
mission is hereby authorized to provide by resolution for
the issuance of bridge revenue refunding bonds of the
Commission for the purpose of refunding any bridge reve-
nue bonds issued under the provisions of this sub-title and
then outstanding. The issuance of such bridge revenue re-
funding bonds, the maturities and other details thereof,
the rights of the holders thereof, and the duties of the
State and of the Commission in respect to the same, shall be
governed by the foregoing provisions of this sub-title in so
far as the same may be applicable and by the following
provisions:

(a) No bridge revenue refunding bonds shall be de-
livered, unless delivered in exchange for bridge revenue
bonds to be refunded thereby, except in the amount nec-
essary to provide for the payment of matured or redeem-
able bridge revenue bonds or bridge revenue bonds matur-
ing or redeemable within three months, including any re-
demption premium thereon.

(b) No bridge revenue refunding bonds shall be issued,
unless issued to refund bridge revenue bonds which have
matured or will mature within three months, or unless the
interest rate of the bridge revenue refunding bonds shall
be at least one-fourth of one per centum less than the in-
terest rate borne by the bridge revenue bonds to be re-
funded.

64DD. Alternative Method. The foregoing sections of
this sub-title shall be deemed to provide an additional and
alternative method for the doing of the things authorized
thereby and shall be regarded as supplemental and addition-
al to powers conferred by other laws, and shall not be re-
garded as in derogation of any powers now existing. Such
sections, being necessary for the welfare of the State and
its inhabitants, shall be liberally construed to effect the
purposes thereof.

64EE. Constitutional Construction. The provisions of
this sub-title are -severable, and if any of its provisions shall