- a) Minimum clearance of all aisles, including the aisle (or passageway) leading to an emergency door in the rear, shall be 12 inches.
- b) A dedicated aisle which conforms to 49 CFR 571.217 may be adjacent to any side emergency door.
(Source: Amended at 26 Ill. Reg. 3255, effective February 19, 2002)