Regulations of Connecticut State Agencies
(a) STOP signs are intended for use on roadways where raffic is required to stop.
(b) The STOP sign shall be an octagon with white message and border on a red background.
(c) The standard size shall be 30 inches by 30 inches. Where greater emphasis or visibility is required, a larger size is recommended. On low- volume local streets and secondary roads with low approach speeds, a 24-inch by 24-inch size may be used.
(d) At a multiway stop intersection, a supplementary plate should be mounted just below each STOP sign. If the number of approach legs to the intersection is three or more, the numeral on the supplementary plate shall correspond to the actual number of legs, or the legend ALL-WAY may be used. The supplementary plate shall have white letters on a red background and shall have a standard size of 12 inches by 6 inches or 18 inches by 6 inches.
(e) A STOP sign beacon or beacons may be used in conjunction with a STOP sign.
(f) Secondary messages shall not be used on STOP sign faces.
(Effective November 3, 1981)