70 ILCS 3605/48
Beginning 30 days after the effective date of this amendatory Act of 1990, no person shall consume any food or drink, excluding any medicine, upon any rapid transit train. As used in this Section "rapid transit train" means a high speed, high capacity, electric powered public transport train that operates on exclusive rights of way with limited stops. The tracks may be in underground tunnels, in elevated structures, in open cuts, at surface level, or any combination thereof. This Section does not apply to commuter trains. As used in this Section "commuter train" means a passenger carrying train, multi-unit electrical or diesel type, designed to operate a commuter service on railways forming part of the general railway system.
A violation of this Section is a petty offense for which the offender shall be fined $100.
70 ILCS 3605/48