Illinois transport rules require cannabis to be in a reasonably secured, sealed, odor-proof, child-resistant container. It must be in a location inaccessible to the driver, which in practice means the trunk or a locked glove compartment. Passengers cannot consume cannabis in the vehicle at any time. The vehicle itself cannot smell of cannabis. Transport of amounts exceeding legal possession limits triggers separate criminal charges. The chicagoduilawyer.net brand notes that pickup trucks without a true trunk create ambiguity, and Illinois appellate rulings have not fully resolved the question. Locked container behind the rear seat is the safest field-tested compliance posture.
