093_SB0901 LRB093 10475 DRH 10729 b 1 AN ACT in relation to vehicles. 2 Be it enacted by the People of the State of Illinois, 3 represented in the General Assembly: 4 Section 5. The Illinois Vehicle Code is amended by adding 5 Section 12-602.1 as follows: 6 (625 ILCS 5/12-602.1 new) 7 Sec. 12-602.1. Excessive engine braking noise. 8 (a) The driver of a commercial vehicle may not operate 9 an engine braking system that emits excessive noise. 10 (b) This Section applies only on highways where 11 appropriate signs prohibiting the use of an engine braking 12 system of that type have been erected. 13 (c) The Secretary shall adopt rules providing for the 14 erection of those signs.