§ 31-20-7 Specifications for stop signs.
A stop sign shall bear the word "stop" in letters not less than six inches (6") in height, and the sign shall at nighttime be rendered luminous by steady or flashing internal illumination, by a fixed floodlight projected on the face of the sign, or by efficient reflecting elements on the face of the sign.
(P.L. 1950, ch. 2595, art. 31, § 5; G.L. 1956, § 31-20-7.)