N.Y. Comp. Codes R. & Regs. tit. 17 § 2C.32
INSERT the following paragraphs:
Guidance:
01A The Slippery When Wet (W8-5) sign without a supplemental plaque or with the WHEN WET (W8-5P) plaque should be used only where skid resistance is significantly below that normally associated with the particular type of pavement, or where there is evidence of unusual wet pavement skidding.
01B The ICE (W8-5aP) plaque should be used only where it has been determined that recurrent pavement icing in an isolated section of otherwise clear roadway constitutes an unusual hazard. The ICE (W8-5aP) plaque is not intended for use in conjunction with normal wintertime storm-related snow or ice conditions.
01C Where used, the ICE (W8-5aP) plaque and BRIDGE ICES BEFORE ROAD (W8-13) sign should be displayed only during periods when icing is likely to occur. Variable message or part-time signs should be considered for locations subject to periodic posting.
Guidance:
07A Where a surface condition exists for a distance of 1000 feet or longer, the W8-5, W8-7, W8-8, W8-11, and W8-14 signs should be supplemented with a Distance plaque (see Section 2C.55 ). Where additional signs are placed within 1000 feet of the end of the surface condition, the Distance plaque should be omitted.
07B Surface Condition signs should be removed when the condition no longer exists.
N.Y. Comp. Codes R. & Regs. Tit. 17 § 2C.32