The commissioner of public safety shall be issued distinctive license plates to be used on motor vehicles assigned to the Department of Public Safety and operated by troopers of the Georgia State Patrol. The distinctive plates shall be issued free of charge in accordance with procedures agreed upon by the commissioner of public safety and the commissioner of motor vehicle safety. License plates issued pursuant to this Code section need not contain a place for the county name decal and no county name decal need be affixed to a license plate issued pursuant to this Code section.