11B-502.8 Additional Signs
The additional sign shall not be less than 17 inches (432 mm) wide by 22 inches (559 mm) high.
The additional sign shall clearly state in letters with a minimum height of 1 inch (25 mm) the following:
"Unauthorized" vehicles parked in designated accessible spaces not displaying distinguishing placards or special license plates issued for persons with disabilities will be towed away at the owner's expense. Towed vehicles may be reclaimed at: _________________________ or by telephoning _______________________."