Section 449.20  Application

a)         This Part applies to any school bus which is equipped to use any liquefied petroleum gas or compressed natural gas as a fuel propellant and began operation on or after February 26, 1990.

b)         This Part does not apply to any school bus which was equipped to use any liquefied petroleum gas or compressed natural gas as a fuel propellant before February 26, 1990.

(Source:  Amended at 19 Ill. Reg. 16732, effective December 1, 1995)