Colorado Revised Statutes Title 42. Vehicles and Traffic § 42-20-301. Route designation

(1)(a) The patrol, after consultation with local governmental authorities, has the sole authority to designate which public roads are to be used and which are not to be used by motor vehicles transporting hazardous materials. The patrol shall exercise its authority in accordance with section 42-20-302. Gasoline, diesel fuel, and liquefied petroleum gas are exempt from route designation unless the petitioning authority specified in section 42-20-302 requests their inclusion. The patrol may exempt crude oil from route designation after a request from the petitioning authority.

(b) The patrol may include, as part of designated route restrictions, the closing of streets and highways and other conditions or restrictions the patrol deems advisable, except for hours of operation and curfews.

(c) Routes designated by the patrol in accordance with this part 3 do not apply to motor vehicles when used to transport to or from the farm or ranch site products necessary for agricultural production.

(d) No city, county, or city and county may impose restrictions on hours of operation on designated routes; except that this paragraph (d) does not apply to any city, county, or city and county that, by resolution or ordinance, had routes or hours of operation restrictions in effect on July 1, 1985.

(3)(a) Notwithstanding any other provision of this part 3 or part 1 or 2 of this article 20 to the contrary, the transportation commission may regulate hours of operation of the Eisenhower-Johnson tunnels, structure numbers F13Y and F13X, respectively, on interstate 70.

(b) The patrol may conform hazardous materials routing regulations made pursuant to this section to transportation commission regulations made pursuant to subsection (3)(a) of this section.