Okla. Stat. tit. 68, § 68-614: Interstate carriers - Partial invalidity

Nothing in this article shall be construed as requiring

interstate carriers to make a showing of "public convenience and

necessity" in order to secure any license required by the provisions

hereof, and the provisions of this article shall apply to interstate

commerce only insofar as such regulation is permitted by the

Constitutions of Oklahoma and the United States, and the holding of

any part of this article or any section or part thereof to be void

or ineffective for any cause by any court shall not affect any other

section or part of this article.