2011 Utah Code
Title 53 Public Safety Code
Chapter 3 Uniform Driver License Act
Section 404 Requirements to drive commercial motor vehicle.

53-3-404. Requirements to drive commercial motor vehicle.
(1) A person may not drive a commercial motor vehicle, unless the person has been issued and is in immediate possession of:
(a) a CDL license certificate valid for the commercial motor vehicle the person is driving; or
(b) a valid CDIP license certificate in accordance with Section 53-3-408.
(2) (a) A licensee shall display a CDL or CDIP license certificate upon demand of a justice court judge, a peace officer, a special function officer, a port-of-entry officer, or a designee of the division.
(b) It is a defense to a charge under this section that the person charged produces in court a CDL or CDIP license certificate that is issued to the person and valid at the time of the citation or arrest.
(3) A person may not drive a commercial motor vehicle if the person's privilege to drive a commercial motor vehicle is:
(a) suspended, revoked, or canceled;
(b) subject to a disqualification;
(c) subject to an out-of-service order; or
(d) not medically certified as defined in Section 53-3-402.
(4) A person may not drive a commercial motor vehicle if the commercial motor vehicle is subject to an out-of-service order.