Utah Code Ann. § 76-5-207
(1) As used in this section:
(a) "Drug" or "drugs" means:
(2)
(a) Criminal homicide is automobile homicide, a third degree felony, if the person operates a motor vehicle in a negligent manner causing the death of another and:
(3)
(a) Criminal homicide is automobile homicide, a second degree felony, if the person operates a motor vehicle in a criminally negligent manner causing the death of another and: