As part of its DUI statute, Illinois has a provision that provides that any amount of cannabis or controlled substance in a driver’s system may be the basis for a DUI charge. This is the only part of Illinois DUI law that permits a charge of driving while under the influence – even if there is no evidence that the person was impaired or intoxicated.
The most commonly cited example of the law is the person who may have smoked marijuana days or weeks earlier and then is stopped for a minor moving violation or as a result of an accident. If the officer has any reason to believe that the person had smoked marijuana at some point, the officer may seek testing. Often the situation arises in the case of an accident where the person was injured, taken to a hospital and testing is conducted, revealing the presence of a by-product of marijuana, called a ‘metabolite’.
The most recent example of the absurdity of the law is the case of Scott Shirey. In December 2011, Mr. Shirey was driving with his two young twin sons in his car. While driving, he was broad-sided by another vehicle and one of his children was killed and his old child was severely injured.