18 U.S.C. § 39. Traffic signal preemption transmitters

1. (a)
   (a)

   Offenses.—

   1. (1)
      (a)(1)

      Sale.—

      Whoever, in or affecting interstate or foreign commerce, knowingly sells a traffic signal preemption transmitter to a nonqualifying user shall be fined under this title, or imprisoned not more than 1 year, or both.
   2. (2)
      (a)(2)

      Use.—

      Whoever, in or affecting interstate or foreign commerce, being a nonqualifying user makes unauthorized use of a traffic signal preemption transmitter shall be fined under this title, or imprisoned not more than 6 months, or both.
2. (b)
   (b)

   Definitions.—

   In this section, the following definitions apply:

   1. (1)
      (b)(1)

      Traffic signal preemption transmitter.—

      The term “traffic signal preemption transmitter” means any mechanism that can change or alter a traffic signal’s phase time or sequence.
   2. (2)
      (b)(2)

      Nonqualifying user.—

      The term “nonqualifying user” means a person who uses a traffic signal preemption transmitter and is not acting on behalf of a public agency or private corporation authorized by law to provide fire protection, law enforcement, emergency medical services, transit services, maintenance, or other services for a Federal, State, or local government entity, but does not include a person using a traffic signal preemption transmitter for classroom or instructional purposes.