2021 Colorado Code
Title 42 - Vehicles and Traffic
Article 4 - Regulation of Vehicles and Traffic
Part 6 - Signals - Signs - Markings
§ 42-4-606. Display of Unauthorized Signs or Devices

1. No person shall place, maintain, or display upon or in view of any highway any unauthorized sign, signal, marking, or device which purports to be or is an imitation of or resembles an official traffic control device or railroad sign or signal, or which attempts to direct the movement of traffic, or which hides from view or interferes with the effectiveness of any official traffic control device or any railroad sign or signal, and no person shall place or maintain nor shall any public authority permit upon any highway any traffic sign or signal bearing thereon any commercial advertising. The provisions of this section shall not be deemed to prohibit the use of motorist services information of a general nature on official highway guide signs if such signs do not indicate the brand, trademark, or name of any private business or commercial enterprise offering the service, nor shall this section be deemed to prohibit the erection upon private property adjacent to highways of signs giving useful directional information and of a type that cannot be mistaken for official signs.
2. Every such prohibited sign, signal, or marking is declared to be a public nuisance, and the authority having jurisdiction over the highway is empowered to remove the same or cause it to be removed without notice.
3. Any person who violates any provision of this section commits a class A traffic infraction.
4. The provisions of this section shall not be applicable to informational sites authorized under section 43-1-405, C.R.S.
5. The provisions of this section shall not be applicable to specific information signs authorized under section 43-1-420, C.R.S.

History. Source: L. 94: Entire title amended with relocations, p. 2344, § 1, effective January 1, 1995.

This section is similar to former § 42-4-507 as it existed prior to 1994, and the former § 42-4-606 was relocated to § 42-4-706 .

When used to prohibit expressive activities this section is unconstitutional on the basis it is impermissibly broad and vague. Faustin v. City and County of Denver, 104 F. Supp. 2d 1280 (D. Colo. 2000 ).