All state trucks in use by the department of transportation shall be equipped with a backup warning device that meets the latest minimum standards as promulgated by either federal occupational health and safety standards or the standards set by the department of transportation.
Department of transportation — Vehicles — Backup warning device
R.I. Gen. Laws § 31-23-58., under Chapter 31-23 Equipment and Accessories Generally.
R.I. Gen. Laws § 31-23-58.