Illinois law has stiffened the penalties on speeding over the last few years. Under current law, speeding 26 to 34 miles over the limit is a Class B Misdemeanor, while 35 and above is a Class A. You cannot receive supervision for these offenses. Supervision is essentially a warning to stay out of trouble and is not considered a conviction for criminal law or insurance purposes. Therefore, if you plead or are found guilty of speeding over 25 miles, you will have a conviction. See our related blog at 2014 Update to Speeding Law.