625 ILCS 5/18c-6103

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.