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IDOT is responsible for regulating and overseeing inspections that are conducted at approximately 250 official testing stations located across Illinois.
COMMERCIAL and privately-owned vehicles operated on Illinois highways are required by law to be inspected in accordance with establish criteria on a periodic basis. Interstate carriers of property are required to be inspected annually, while Intrastate carriers are required to be inspected every six months. INTERSTATE CARRIERS OF PASSENGERS are subject to BOTH the interstate (Annual) as well as the intrastate (Semi-Annual) inspection.
The following vehicles are subject to the Illinois Diesel Emission Inspection Program:
The affected areas are the counties of: Cook, DuPage, Kane, Lake, Madison, McHenry, Monroe, Will, St. Clair
And the townships of:
Please select a tab to learn more
Map of Vehicle Inspection Stations map
Scheduled Inspections are performed by certified safety testers who are employed at Illinois Official Testing Stations.
To obtain information about the vehicle inspection records, please contact our office at 217-785-1181.
Illinois Department of Transportation
Hanley Building
2300 S. Dirksen Parkway
Springfield, IL 62764
(217) 782-7820 or TTY (866) 273-3681