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 BUSES442.APPENDIX E92 Ill. Adm. Code 442.APPENDIX EE Octagon Shaped Stop Signal ArmLast amended: 1992Year: 2026Length: 8 wordsOfficial source Section 442.APPENDIX E Octagon Shaped Stop Signal ArmPrevious92 Ill. Adm. Code 442.APPENDIX D