625 ILCS 27/10
As used in this Act:
"Rental Company" means a person or entity that rents private passenger vehicles to the public for 30 days or less.
"Renter" means a person or entity that obtains the use of a private passenger vehicle from a rental company under terms of a rental agreement.
"Rental Agreement" means an agreement for 30 days or less setting forth the terms and conditions governing the use of a private passenger vehicle provided by a rental company.
"Authorized Driver" means: the renter; the renter's spouse if the spouse is a licensed driver and satisfies the rental company's minimum age requirement; the renter's employer, employee, or co-worker if that person is a licensed driver, satisfies the rental company's minimum age requirement, and at the time of the rental is engaged in a business activity with the renter; any person who is expressly listed by the rental company on the rental agreement as an authorized driver; and any person driving directly to a medical or police facility under circumstances reasonably believed to constitute an emergency and who is a licensed driver.
"Damage Waiver" means a rental company's agreement not to hold an authorized driver liable for all or a part of any damage to or loss of a rented vehicle for which the renter may be liable pursuant to Section 6-305.2. "Damage Waiver" shall encompass within its meaning other similar terms used by rental companies, such as "Collision Damage Waiver", "Loss Damage Waiver", "Physical Damage Waiver", and the like.
625 ILCS 27/10