US lawIllinoisRegulationsTitle 92 — TRANSPORTATIONCHAPTER I: DEPARTMENT OF TRANSPORTATIONSUBCHAPTER e: TRAFFIC SAFETY (EXCEPT HAZARDOUS MATERIALS)Part 441 — INSPECTION PROCEDURES FOR TYPE I SCHOOL BUSES441.ILLUSTRATION B92 Ill. Adm. Code 441.ILLUSTRATION BB Exhaust GuidelinesYear: 2026Length: 5 wordsOfficial source Section 441.ILLUSTRATION B Exhaust GuidelinesPrevious92 Ill. Adm. Code 441.ILLUSTRATION ANext92 Ill. Adm. Code 441.ILLUSTRATION C