C.R.S. § 40-10.1-103

(1) All common carriers and contract carriers are declared to be public utilities within the meaning of articles 1 to 7 of this title and are declared to be affected with a public interest and subject to this article and articles 1 to 7 of this title, including the regulation of all rates and charges pertaining to public utilities, so far as applicable, and other laws of this state not in conflict therewith. (2) Except as provided in subsection (1) of this section, motor carriers are not public utilities under this title, but are declared to be affected with a public interest and are subject to regulation to the extent provided in this article, in section 40-2-110.5 , in article 6 of this title, and in article 7 of this title except sections 40-7-113.5 , 40-7-116.5 , and 40-7-117 . The term “public utility”, when used in articles 6 and 7 of this title, includes all motor carriers. (3) Transportation network companies, as defined in section 40-10.1-602 (3), are not common carriers, contract carriers, or motor carriers under this title, but are declared to be affected with a public interest and are subject to regulation to the extent provided in part 6 of this article.