756                                   LAWS OF MARYLAND                           CH. 451

duties of the Authority in relation to the acquisition or construction
of any project and extension, enlargement, improvement, mainte-
nance, operation, repair and insurance of the projects and the cus-
tody, safeguarding and application of all moneys and may contain
provisions for the employment of consulting engineers in connection
with any such construction and the operation of the projects. It is
lawful for any bank or trust company incorporated under the laws
of this State which may act as depositary of the proceeds of the
bonds or of revenues to furnish such indemnifying bonds or to pledge
such securities as is required by the Authority. The trust agreement
shall set forth the rights and remedies of the bondholders and of
the trustee and may restrict the individual right of action by bond-
holders. In addition to the aforegoing, the trust agreement may con-
tain other provisions as the Authority deems reasonable and proper
for the security of the bondholders. All expenses incurred in carry-
ing out the provisions of the trust agreement may be treated as an
item of current expenses.

18. Revenues.

(a)  Power to charge rentals, fees, etc.

The Authority may fix, revise, charge and collect rentals, rates,
fees or other charges for the use of each project, and contract with
any person, partnership, association, or corporation desiring the use
of any part of a project and its appurtenances for any proper pur-
pose, and fix the terms, conditions, rentals and rates of charges for
such use. Rentals and other rates, fees and charges shall be fixed
and adjusted in respect of the aggregate thereof from the projects
under the control of the Authority to provide funds sufficient with
other revenues, if any, (i) to pay the Authority's current expenses
if and to the extent that the monies available under the provisions
of Section 9 of this Article are insufficient for this purpose, (ii) to
pay the principal of and the interest on all revenue bonds issued
under this Article as they become due and payable, (in) to create
reserves for these purposes, and (iv) to provide funds for paying
the cost of renewals or replacements, the cost of acquiring or install-
ing equipment and the cost of enlarging, extending, reconstructing
or improving any project or projects. The rentals and other rates,
fees, and charges shall not be subject to supervision or regulation
by any department, division, commission, board, bureau, or agency
of the State or any political subdivision thereof.

(b)  Pledge of revenues to payment of bonds.

The Authority may pledge such amount of the rentals and other
revenues over and above any amounts necessary to pay current
expenses and to provide such reserves therefor as may be provided
for in the trust agreement, to the payment of the interest on and
the principal of the revenue bonds issued under this Article. The
monies so pledged shall be set aside at such regular intervals and
in such amounts as provided in the trust agreement in a sinking
fund for the payment of the interest, principal and the redemption
price or purchase price of the bonds. The pledge shall be valid and
binding from the time when the pledge is made; the rentals or other
revenues so pledged and thereafter received by the Authority shall
immediately be subject to the lien of the pledge without any physical
delivery thereof or further act, and the lien of any such pledge shall