US lawIllinoisRegulationsTitle 92 — TRANSPORTATIONCHAPTER I: DEPARTMENT OF TRANSPORTATIONSUBCHAPTER e: TRAFFIC SAFETY (EXCEPT HAZARDOUS MATERIALS)Part 442 — MINIMUM SAFETY STANDARDS FOR CONSTRUCTION OF TYPE II SCHOOL BUSESSubpart C442.40592 Ill. Adm. Code 442.405Air CleanerYear: 2026Length: 23 wordsOfficial source Section 442 Section 442.405 Air Cleaner The bus shall be equipped with an adequate oil bath, dry element, or equivalent type air cleaner.Next92 Ill. Adm. Code 442.410