Compliance with steady-state idle, evaporative system integrity, OBD, visual inspection, and on-road sensing test standards contained in 35 Ill. Adm. Code 240 shall be determined by use of test procedures and other requirements as applicable, as set forth in this Part, and shall be performed to the extent practicable. The test procedure applicable to each non-exempt vehicle shall be based on the model year and vehicle type as supplied by the manufacturer. If this information is not available from the manufacturer, the model year and vehicle type shall be based on registration information as supplied by the Illinois Secretary of State.
Ill. Admin. Code tit. 35, § 276.201
Amended at 36 Ill. Reg. 2257, effective January 30, 2012