Cal. Veh. Code § 23558
A person who proximately causes bodily injury or death to more than one victim in any one instance of driving in violation of Section 23153 of this code or in violation of Section 191.5 of, or subdivision (a) of Section 192.5 of, the Penal Code, shall, upon a felony conviction, and notwithstanding subdivision (g) of Section 1170.1 of the Penal Code, receive an enhancement of one year in the state prison for each additional injured victim. The enhanced sentence provided for in this section shall not be imposed unless the fact of the bodily injury to each additional victim is charged in the accusatory pleading and admitted or found to be true by the trier of fact. The maximum number of one year enhancements that may be imposed pursuant to this section is three.
Notwithstanding any other provision of law, the court may strike the enhancements provided in this section if it determines that there are circumstances in mitigation of the additional punishment and states on the record its reasons for striking the additional punishment.
Ca. Veh. Code § 23558