C.R.S. § 40-10.1-109

(1) A motor carrier subject to part 2, 3, or 7 of this article 10.1 shall comply with the safety rules adopted by the commission pursuant to section 40-10.1-108 . (2) A motor carrier operating a motor vehicle that is defined as a commercial vehicle in section 42-4-235 (1)(a), C.R.S., shall comply with the safety rules adopted by the department of public safety pursuant to section 24-33.5-203 (1)(b), C.R.S., in addition to the rules adopted by the commission under subsection (1) of this section. (3) Nothing in subsection (1) or (2) of this section diminishes the authority of the commission, the department of public safety, a peace officer, or any other agent of government to enforce the laws of this state.