Ill. Admin. Code tit. 92, § 3380.2000
c) The following interpretations of, additions to, and deletions from 49 CFR 393 shall apply for purposes of this Part.
3) Authorized Illinois State Police shall place vehicles out-of-service for any violation of the Law or the Illinois Motor Carrier Safety Regulations that warrants placing the vehicle out-of-service under the "North American Uniform Out-of-Service Criteria" as defined at 92 Ill. Adm. Code 390.1020.
(Recodified from 92 Ill. Adm. Code 393 (Department of Transportation) pursuant to P.A. 104-0025, at 49 Ill. Reg. 12555)