N.Y. Comp. Codes R. & Regs. tit. 17 § 2A.03
INSERT the following paragraphs:
Guidance:
04A Part-time signs should be removed from view when they do not apply.
Support:
04B In some situations, sign messages are needed only part of the time. Examples are seasonal speed limits, icy pavement zone warnings, and peak-hour turn prohibitions. Part-time signs may be short-term (generally on a daily or weekly basis) or long-term (generally on a monthly or seasonal basis). Some possible methods of displaying part-time signs are to:
Install the sign on a portable support. This method is appropriate only for short-term signs;
Remove and replace the sign;
Cover and uncover the sign;
Hinge the sign so that one part may be folded over the other to eliminate its display; and
Include the applicable times on a supplementary sign. This method may be used only for certain regulatory signs, as prescribed in text.
N.Y. Comp. Codes R. & Regs. Tit. 17 § 2A.03