Side marker lamps shall be capable of being seen and distinguished under normal atmospheric conditions at the times lights are required at a distance of five hundred feet (500′) from the side of the vehicle on which they are mounted. Violations of this section are subject to fines enumerated in § 31-41.1-4.
Visibility of side marker lamps
R.I. Gen. Laws § 31-24-43., under Chapter 31-24 Lighting Equipment and Reflectors.
R.I. Gen. Laws § 31-24-43.