(20 ILCS 301/55-15)

Sec. 55-15. Intoxication; local ordinances. No county, municipality or political subdivision may adopt or enforce any law that includes being intoxicated as the sole basis of the offense, nor interpret or apply any law to circumvent the provisions of this Section. However, nothing in this Section affects any law, ordinance, resolution or rule against driving under the influence of alcohol or other drugs, or any similar offense involving operation of a vehicle, aircraft, boat, machinery, or the use of firearms or other equipment. Nothing in this Section affects any law regarding the sale, purchase, use, possession or dispensing of drugs or alcohol at stated places, at stated times or by particular classes of persons.

(Source: P.A. 88-80.)