Ill. Admin. Code tit. 92, § 440.505
At the time of the safety test conducted under provision of Section 13-109 of the Code, and when delivered to the purchaser, the chassis of each Type I School Bus shall conform to the requirements stated or referred to in this Subpart. Some body requirements also applicable to the chassis are repeated or referred to herein.
(Source: Amended at 22 Ill. Reg. 19354, effective October 15, 1998)