Regulations of Connecticut State Agencies
(a) All warning signs in this part with the following exceptions shall be diamond shaped (square with one diagonal vertical) with black legend on a yellow background.
(1) large arrow sign - horizontal rectangle with large black single or double head arrow and black border on yellow background.
(2) chevron alignment sign - vertical rectangle with black chevron symbol on a yellow background.
(3) stop ahead sign - a solid red octagon with white border located below a black vertical arrow on a yellow diamond with a black border alternate for black legend stop ahead on yellow diamond with a black border.
(4) yield ahead sign - a downward pointing, equilateral triangle having a red border band and a white interior located below a black vertical arrow on a yellow diamond with a black border: alternate for a black legend yield ahead on a yellow diamond with a black border.
(5) signal ahead sign - a red, yellow, green and black signal ahead on a yellow diamond with a black border.
(6) supplemental plaques - a horizontal rectangle with black legend and border on a yellow background.
(7) advisory speed plate - a square with black legend and border on a yellow background.
(8) advisory exit speed or ramp speed signs - a vertical rectangle with black legend and border on a yellow background.
(9) No passing zone - sign - pennant shaped with black legend and border on a yellow background.
(10) railroad advance warning sign - round with black legend and border on a yellow background.
(11) school advance warning and school crossing signs - pentagon shaped with black symbol and border on a yellow or fluorescent yellow-green background.
(12) weight limit advance warning signs - square or rectangular with black legend and/or symbols and border on a yellow background.
(13) pedestrian warning, bicycle warning, playground warning and school bus and school warning signs may have black legend and border on a yellow or fluorescent yellow-green background.
(14) further exceptions to the above shall be based on competent engineering study.
(Effective November 3, 1981; Effective December 23, 2005)