625 ILCS 5/18c-6103: Unlawful Operations.

Except as provided in Article I of this Sub-chapter, and subject to the provisions stated herein, no person shall:

(1) Operate as a motor carrier of passengers unless the person possesses a valid license authorizing such operations.

(2) Provide service at rates other than those contained in lawfully applicable tariffs for such service;

(3) Otherwise operate as a motor carrier of passengers in violation of any provision of this Chapter, Commission regulations and orders, or any other law of this state; or

(4) Aid or abet any other person in a violation of this Chapter, Commission regulations or orders, by soliciting or receiving, or by compensating service from a person not authorized to provide such service, or at other than lawful rates for such service, or otherwise.