(a) If the alcohol concentration is less than .08, that fact may be considered with other competent evidence to determine if the defendant was under the influence of alcohol, or both alcohol and drugs.
(b) If the alcohol concentration is .08 or more, it shall be prima facie evidence that the defendant was under the influence of alcohol to a degree that renders the person incapable of driving safely.
(c) If there was present in the defendant's bodily substance any narcotic, hypnotic, somnifacient, stimulating or other drug which has the capacity to render the defendant incapable of safely driving a vehicle, that fact may be considered to determine if the defendant was under the influence of drugs, or both alcohol and drugs, to a degree that renders the defendant incapable of driving safely.
History: L. 1955, ch. 279, § 1; L. 1967, ch. 60, § 2; L. 1970, ch. 51, § 3; L. 1973, ch. 42, § 1; L. 1976, ch. 49, § 1; L. 1982, ch. 144, § 4; L. 1985, ch. 48, § 7; L. 1986, ch. 40, § 4; L. 1986, ch. 41, § 1; L. 1988, ch. 47, § 15; L. 1993, ch. 259, § 16; L. 1993, ch. 291, § 269; July 1.