Nothing contained in this Subpart C shall be construed as applying to the Authority, its Directors, officers, employees, agents, or contractors in the conduct of the Authority's business or to persons having a written license or permit from the Authority authorizing uses otherwise prohibited by this Subpart C, or to the activities of police, public fire, public ambulance or tow truck vehicles properly called upon the Tollway for emergency purposes while carrying out such purposes.
Ill. Admin. Code tit. 92, § 2520.340