A. It shall be unlawful for any person who is under the influence of intoxicating liquor to drive or be in actual physical control of any vehicle within this city.
B. In any criminal prosecution for a violation of subsection A of this section relating to driving a vehicle while under the influence of intoxicating liquor, the amount of alcohol in the defendant's blood at the time alleged as shown by chemical analysis of the defendant's blood, urine, breath, or other bodily substance shall give rise to the following presumptions:
1. If there was at that time 0.05 percent or less by weight of alcohol in the defendant's blood, it shall be presumed that the defendant was not under the influence of intoxicating liquor;
2. If there was at that time in excess of 0.05 percent but less than 0.15 percent by weight of alcohol in the defendant's blood, such fact shall not give rise to any presumption that the defendant was or was not under the influence of intoxicating liquor, but such fact may be considered with other competent evidence in determining the guilt or innocence of the defendant;
3. If there was at the time 0.15 percent or more by weight of alcohol in the defendant's blood, it shall be presumed that the defendant was under the influence of intoxicating liquor;
4. The foregoing provisions of this subsection shall not be construed as limiting the introduction of any other competent evidence bearing upon the question whether or not the defendant was under the influence of intoxicating liquor.
C. It shall be unlawful for any person who is a habitual user of, or under the influence of any narcotic drug, or who is under the influence of any other drug to a degree which renders him incapable of safely driving a vehicle to drive a vehicle within this city. The fact that any person charged with a violation of this subsection is or has been entitled to use such drug under the laws of this state shall not constitute a defense against any charge of violating this subsection. (1968 Code)
Notes
| 1 | 1. See also section 1-3-3 of this code. |