Oscillating, rotating or flashing lights located on or within police vehicles in this State shall be lighted whenever a police officer is in pursuit of a violator of a traffic law or regulation.
625 ILCS 5/12-216
Oscillating, rotating or flashing lights located on or within police vehicles in this State shall be lighted whenever a police officer is in pursuit of a violator of a traffic law or regulation.
625 ILCS 5/12-216