41 C.F.R. § 109-38.204-1 Unlimited exemptions.
Title 41 - Public Contracts and Property Management
(a)–(f) [Reserved] (g) The Director, Office of Administrative Services and heads of field organizations for their respective organizations may approve exemptions from the requirement for the display of U.S. Government license tags and other official identification for motor vehicles used for security or investigative purposes.
Title 41: Public Contracts and Property Management
PART 109–38—MOTOR EQUIPMENT MANAGEMENT
Subpart 109–38.2—Registration, Identification, and Exemptions
§ 109-38.204-1 Unlimited exemptions.

