C.R.S. § 42-4-712
42-4-712. Driving in highway work area
42-4-712. Driving in highway work area. (1) The driver of a vehicle shall yield the right-of-way to any authorized vehicle or pedestrian engaged in work upon a highway within any highway construction or maintenance work area indicated by official traffic control devices.
(2) The driver of a vehicle shall yield the right-of-way to any authorized service vehicle engaged in work upon a highway whenever such vehicle displays flashing lights meeting the requirements of section 42-4-214.
(3) Any person who violates any provision of this section commits a class A traffic infraction.