Yes, it is illegal to wear headphones while driving in Illinois. According to Illinois Compiled Statute Sec. 12-610, drivers are prohibited from using any headset device, other than hearing aids, while driving. Individuals driving an emergency vehicle are exempt from this law, and individuals with a novice class or higher amateur radio license are permitted to use a one-ear radio device while driving. There are no other exceptions to the law, and anyone else caught driving while wearing headphones may face fines.