All business and correspondence pertaining to the operation of an Official Testing Station, Official Mobile Safety Testing Company, and vehicle inspections shall be addressed to:

Illinois Department of Transportation

Bureau of Investigations and Compliance

Commercial Vehicle Safety Section

3215 Executive Park Drive

Springfield, Illinois 62703

General Information: (217) 785-1181

Fax: (217) 524-0071

Email: DOT.VehicleInspectionUnit@illinois.gov

(Source: Amended at 49 Ill. Reg. 15244, effective November 13, 2025)