N.Y. Comp. Codes R. & Regs. tit. 17 § 2C.07
DELETE the entire section.
INSERT the following paragraphs:
Standard:
00A If Table 2C-5 indicates that a horizontal alignment sign (see Figure 2C-1) is required, recommended, or allowed, the sign installed in advance of the curve shall be a Curve (W1-2) sign unless a different sign is required, recommended, or allowed by the provisions of this Section.
00B A Turn (W1-1) sign shall be used instead of a Curve sign in advance of curves that have advisory speeds of 30 mph or less (see Figure 2C-2).
Option:
00C Where the legal speed limit is 30 MPH and the advisory speed is higher than the speed limit, a horizontal alignment sign, if used, may be either the Turn (W1-1) or Curve (W1-2) sign.
Guidance:
00D Signs are not required, and normally should not be used, for curves having advisory speeds more than five mph above the legal and 85th-percentile speeds.
Standard:
00E Where the advisory speed is less than the legal speed limit, the horizontal alignment sign shall be supplemented with an Advisory Speed plaque (see Section 2C.08 ).
00F Where the advisory speed is greater than the legal speed limit, an Advisory Speed plaque shall not be used.
Option:
00G Where the advisory speed is equal to the legal speed limit, an Advisory Speed plaque may be used.
00H If the change in horizontal alignment is 135 degrees or more, the Hairpin Curve (W1-11) sign (see Figure 2C-1) may be used instead of a Curve or Turn sign. If the change in horizontal alignment is approximately 270 degrees, such as on a cloverleaf interchange ramp, the 270-degree Loop (W1-15) sign (see Figure 2C-1) may be used instead of a Curve or Turn sign.
Guidance:
00I When the Hairpin Curve sign or the 270-degree Loop sign is installed and the advisory speed is equal to or 5 MPH above the legal speed limit, either a One-Direction Large Arrow (W1-6) sign or Chevron Alignment (W1-8) signs should be installed on the outside of the curve.
Standard:
00J Curves in the same direction separated by 200 feet or more shall be signed separately, except as provided elsewhere in this section. Curves in opposite directions separated by more than 600 ft shall be signed separately.
Option:
00K Two curves in the same direction separated by less than 200 feet may be considered a single curve having an advisory speed equal to the lower of the two curves.
Support:
00L Separate signing of two curves in the same direction separated by less than 200 feet is preferable where the first curve is long and has an advisory speed higher than the second curve.
00M Separate signing of two curves in opposite directions separated by 600 feet or less is preferable where the first curve is long and has an advisory speed higher than the second curve. Separate signing may also be preferable where the distance between curves is more than 400 ft.
Option:
00N The Winding Road sign may be used where warning is required for a series of three or more curves, generally alternating in direction and separated by distances of 600 feet or less.
Standard:
00O Where a Winding Road sign is needed, the W1-5L sign shall be used where the first curve in the series is to the left, and the W1-5R sign shall be used where the first curve in the series is to the right.
00P The advisory speed used with a Reverse Turn (W1-3), Reverse Curve (W1-4), or a Winding Road (W1-5) sign shall be the lowest advisory speed of any curve in the series, except as provided below.
Option:
00Q Each Winding Road sign in advance of, and within, the curve series may be supplemented with a Next Distance (W16-4p) plaque (see Section 2C.55 ) stating the distance to the end of the series.
00R Within the series of curves, appropriate Turn, Curve, Reverse Turn, and Reverse Curve signs may be used for individual curves, or curve combinations, having advisory speeds significantly lower than the other curves in the series.
Guidance:
00S An appropriate Turn, Curve, Reverse Turn, or Reverse Curve sign should be placed following an individually-signed curve, or curve combination, to provide warning for the remaining curves in the series. Advisory speeds for the portions of the series which precede and follow any individually-signed curve, or curve combination, should be determined independently.
N.Y. Comp. Codes R. & Regs. Tit. 17 § 2C.07