Appellant was tried and convicted by a jury of aggravated homicide by vehicle, in violation of W.S. 6-2-106(b). On appeal to this court, he contends that he was prejudiced by an erroneous jury instruction which was an incorrect statement of the law. We agree, and the judgment entered must be reversed.
On the evening of November 26, 1986, appellant went to the Tensleep Bar in Ten-sleep, Wyoming, and met Sharon Kay Meyers. During the course of the evening, appellant consumed a substantial amount of alcohol. Between 1:30 and 2:00 the following morning, appellant and Ms. Meyers left the Tensleep Bar to go to a private party out of town. While driving to this *1174party, appellant lost control of his vehicle, an accident occurred, and Ms. Meyers was ejected from the vehicle. She required emergency medical treatment. Appellant was taken into custody for driving while under the influence of alcohol in violation of W.S. 31-5-233. A breath test and a blood alcohol test were administered, the breath analysis test indicating a .139 blood alcohol content, and the blood test indicating a .1638 blood alcohol content. As a result of the injuries sustained in the accident, Ms. Meyers later died. Appellant was charged with aggravated homicide by vehicle. The statute in effect at the time of this incident read in pertinent part:
“(b) A person is guilty of aggravated homicide by vehicle and shall be punished by imprisonment in the penitentiary for not more than twenty (20) years, if:
“(i) While driving a motor vehicle in violation of W.S. 31-5-233, he causes the death of another person and the violation is the proximate cause of the death * * W.S. 6-2-106 (Cum.Supp.1986).
Section 31-5-233 read in pertinent part:
“(a) It is unlawful for any person who is under the influence of intoxicating liquor, to a degree which renders him incapable of safely driving a motor vehicle, to drive or have actual physical control of any vehicle within this state.” (emphasis added) W.S. 31-5-233 (Cum. Supp.1986).
At trial, over appellant’s objection, the court gave the following instruction to the jury:
“Instruction 13
“The phrase ‘under the influence of intoxicating liquor,’ as used in statute making it an offense to operate a motor vehicle while under the influence of intoxicating liquor means a condition, caused by the consumption of intoxicants, that makes a person less able, either mentally or physically, or both, to exercise clear judgment, and with steady hands and nerves, operate an automobile with safety to himself and to the public.” (emphasis added)
Three other instructions contained the statutory standard of “incapable of safely driving.”
Appellant maintains that Instruction 13 incorrectly lowered the standard from “incapable of safely driving” to “less able * * * to exercise clear judgment * * * with steady hands and nerves.” (emphasis added) We agree that it was error for the court to give the challenged instruction, as there is obviously a substantial difference between a standard of “less able” to safely drive a motor vehicle and “incapable” of safely driving a motor vehicle.
Appellee contends that when read with all the other instructions and considered as a whole, the giving of Instruction 13 did not cause prejudice to appellant. We cannot agree. Inconsistent instructions may confuse a jury. As we stated in State v. Berger, 72 Wyo. 422, 265 P.2d 1061, 1067-68 (1954):
“Where a charge of the court to the jury has contradictory elements in it this puts upon the jury the burden of determining which Instruction they should follow. As said in State v. Vliet, 120 N.J.L. 23, 197 A. 894, 895:
“ ‘Where the law is thus incorrectly charged, although it has been correctly stated elsewhere in the court’s charge, it puts the burden upon the jury to determine which part of a contradictory charge is correct, and this is not, and cannot be, a jury’s duty under any circumstances.’ ”
Because there is a reasonable possibility that the jury may not have convicted appellant if it had not considered Instruction 13, appellant must have a new trial. Jones v. State, 735 P.2d 699 (Wyo.1987).
The appellant’s conviction is reversed, and this case is remanded to the district court for further proceedings consistent with this opinion.
THOMAS, J., files a dissenting opinion and partially joined with BROWN, J., Retired.
BROWN, J., Retired, files a dissenting opinion.