Utah Code § 41-6a-209: Obedience to peace officer or other traffic controllers -- Speeding in construction zones.

(1) A person may not willfully fail or willfully refuse to comply with any lawful order or direction of a:

(a) peace officer;

(b) firefighter;

(c) flagger at a highway construction or maintenance site using devices and procedures conforming to the standards adopted under Section 41-6a-301; or

(d) uniformed adult school crossing guard invested by law with authority to direct, control, or regulate traffic.

(2)

(a) If a person commits a speeding violation in a highway construction or maintenance site where workers are present, the court shall impose a fine for the offense that is at least double the fine in the uniform recommended fine schedule established under Section 76-3-301.5.

(b) The highway construction or maintenance site under Subsection (2)(a) shall be clearly marked and have signs posted that warn of the doubled fine.