(1)In the case of any Crown land the appropriate authority and a highway authority may agree that any provisions of sections 3 and 4 above specified in the agreement shall apply to that land and, while the agreement is in force, those provisions shall apply to that land accordingly (subject, however, to the terms of the agreement).
(2)Any such agreement as is referred to in subsection (1) above may contain such consequential and incidental provisions, including provisions of a financial character, as appear to the appropriate authority to be necessary or equitable; but provisions of a financial character shall not be included in an agreement made by a government department without the approval of the Treasury.
(3)In this section " Crown land " means land belonging to Her Majesty in right of the Crown or of the Duchy of Lancaster, or belonging to the Duchy of Cornwall, or belonging to a government department or held in trust for Her Majesty for the purposes of a government department, and " the appropriate authority " means—
(a)in the case of land belonging to Her Majesty in right of the Crown, the Crown Estate Commissioners or other government department having the management of the land in question;
(b)in the case of land belonging to Her Majesty in right of the Duchy of Lancaster, the Chancellor of that Duchy;
(c)in the case of land belonging to the Duchy of Cornwall, such person as the Duke of Cornwall, or the possessor for the time being of the Duchy of Cornwall, appoints;
(d)in the case of land belonging to a government department or held in trust for Her Majesty for the purposes of a government department, that department.
(4)If any question arises as to what authority is the appropriate authority in relation to any Crown land that question shall be referred to the Treasury, whose decision shall be final.