C.R.S. § 40-1.1-104

(1) People service transportation and volunteer transportation shall not be considered transportation for compensation, commercial transportation, or any form of carrier. Thus, the following laws and regulations do not apply to motor vehicles while being used for the purpose of people service transportation or volunteer transportation: (a) Articles 1 and 2 to 9 of this title, concerning public utilities and common carriers; (b) Article 10.1 of this title, concerning motor carriers; and (c) and (d)(Deleted by amendment, L. 2011, (HB 11-1198), ch. 127, p. 419, § 13, effective August 10, 2011.)(e) Articles 20 to 33 of this title, concerning railroads.