Haw. Rev. Stat. § 198D-10: Limitation on chapter's provisions.

(a) Nothing in this chapter shall be construed as conferring or imposing upon the department any rights, powers, and duties over:

(1) Lands not under its jurisdiction; or

(2) The activities of other public agencies; except if provided by other law or agreement.

(b) The designation as part of the statewide trail and access system of trails and accesses, the use to which the public has no rights, shall not be construed as establishing public rights to use those trails and accesses.