# § 8531. Definitions
In this subchapter:
**(1)** **Commercial use authorization** The term “commercial use authorization” means a commercial use authorization to provide services to visitors to units of the National Park System under subchapter II of chapter 1019 of title 54.
**(2)** **Multijurisdictional trip** The term “multijurisdictional trip” means a trip that—
**(A)** uses 2 or more units of Federal recreational lands and waters; and
**(B)** is under the jurisdiction of 2 or more Federal land management agencies.
**(3)** **Recreation service provider** section 6801 of this title
The term “recreation service provider” has the meaning given the term in (as amended by section 311).
**(4)** **Special recreation permit** section 6801 of this title
The term “special recreation permit” has the meaning given the term in (as amended by section 311).
**(5)** **Visitor-use day** The term “visitor-use day” means a visitor-use day, user day, launch, or other metric used by the Secretary concerned for purposes of authorizing use under a special recreation permit.
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**Source Credit**: (Pub. L. 118–234, title III, § 301, Jan. 4, 2025, 138 Stat. 2891.)
## Editorial Notes
### References in Text
This subchapter, referred to in introductory provisions, was in the original “this title”, meaning title III of , , , which is classified principally to this subchapter. For complete classification of title III to the Code, see Tables.
Section 311, referred to in pars. (3) and (4), means .