26 CFR § 41.4483-1
State exemption
June 25, 2020
Use of a highway motor vehicle by a State is exempt from the tax imposed by section 4481. For this purpose, the term use by a State means the operation by a State on the public highways in the United States of any highway motor vehicle, whether or not such highway motor vehicle is owned by the State.
[T.D. 8879, 65 FR 17154, Mar. 31, 2000]