Idle Reduction Requirement
A person that operates a diesel powered motor vehicle with a gross vehicle weight rating (GVWR) of less than 8,000 pounds may not cause or allow the motor vehicle, when it is not in motion, to idle for more than a total of 10 minutes within any one-hour period. If the vehicle is waiting to weigh, load, or unload cargo or freight, it may idle for up to 30 minutes within any one-hour period. Applicable areas include the counties of Cook, DuPage, Lake, Kane, McHenry, Will, Madison, St. Clair, and Monroe, and the townships of Oswego (Kendall County) and Aux Sable and Goose Lake (Grundy County, as well as any other county with more than 3 million people but outside a municipality with less than 2 million people when within 200 feet of a residential area). Exceptions apply, including those pertaining to emergency vehicles, vehicle weight, traffic, auxiliary power unit use, remote starter systems, school buses, outside temperature, and more.
(Reference 625 Illinois Compiled Statutes 5/11-1429)