R.I. Gen. Laws § 30-7-6: Right-of-way on streets or highways.

(a) The commanding officer of any portion of the militia parading or performing any militia duty in any street or highway may require all persons in such street or highway to yield the right-of-way to the militia, except that the carriage of the United States mail, the legitimate functions of the police, and the progress and operation of hospital ambulances, fire engines, and fire apparatus shall not be interfered with thereby.

(b) Any person, other than those above excepted, who shall hinder, delay, obstruct, or interfere with any portion of the militia parading or performing any militia duty, or who shall attempt to do so, shall be guilty of a misdemeanor.