Any stop or turn signal when required in this chapter shall be given either by means of the hand and arm or by a signal lamp or lamps or mechanical signal device, except as otherwise provided in § 31-16-9. Violations of this section are subject to fines enumerated in § 31-41.1-4.
Method of giving signals
R.I. Gen. Laws § 31-16-8., under Chapter 31-16 Starting, Stopping, and Turns.
R.I. Gen. Laws § 31-16-8.