625 ILCS 5/1-111.7a: Commercial Learner's Permit (CLP).

A permit issued to an individual by a state or other jurisdiction of domicile, in accordance with the standards contained in 49 C.F.R. Part 383, which, when carried with a valid driver's license issued by the same state or jurisdiction of domicile, authorizes the individual to operate a class of commercial motor vehicle when accompanied by a holder of a valid CDL for purposes of behind-the-wheel training. When issued to a CDL holder, a CLP serves as authorization for accompanied behind-the-wheel training in a commercial motor vehicle for which the holder's current CDL is not valid.