Illinois Vehicle Code 625 ILCS 5/11-1429 limits heavy-duty diesel vehicles to 10 minutes of idling per hour in Cook County and other regulated areas. Cook County Department of Public Health enforces air-quality complaints in suburban Cook.
Section 11-1429 of the Illinois Vehicle Code applies to diesel-powered vehicles over 8,000 pounds operating in Cook, DuPage, Kane, Lake, McHenry, and Will counties. Drivers may not idle more than 10 minutes in any 60-minute period. Exceptions exist for traffic, sleeper-berth heating below 32 degrees or above 80 degrees, repairs, emergency vehicles, and powering work equipment. Cook County DPH and Illinois EPA share enforcement; CCDPH responds to neighborhood complaints in suburban Cook. Chicago has its own stricter 3-minute rule under MCC 9-64-180.
First offense $50, escalating to $150 for repeat violations within one year. Commercial fleet operators face additional Illinois EPA penalties up to $500 per day per vehicle.
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Skokie, IL
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Side-by-side rule comparisons with other cities in Cook County.
See how Skokie's vehicle idling restrictions rules stack up against other locations.
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