New York Codes, Rules and Regulations › Title 17 - DEPARTMENT OF TRANSPORTATION › Chapter V - New York State Supplement To The National Manual On Uniform Traffic Control Devices For Streets And Highways-2009 Edition › Part 2 - Signs › Chapter 2C - Warning Signs And Object Markers › Section 2C.05 - Placement of Warning Signs

Current through Register Vol. 46, No. 28, July 10, 2024
DELETE the entire section, including Table
					 2C-4.
INSERT Table NY2C-4 and the following
					 paragraphs:
Standard:
00A All references to "Table 2C-4" in the MUTCD shall
					 be understood to actually refer to Table NY2C-4.
Support:
00B For information on placement of warning signs, see
					 Sections 2A.16 to
					 2A.21.
00C The time needed for detection, recognition, decision,
					 and reaction is called the Perception-Response Time (PRT).
00D Table NY2C-4 lists suggested sign placement distances
					 for three conditions; these values are based on essentially level approaches.
					 The distances shown in Table NY2C-4 can be adjusted for roadway features, other
					 signing, and to improve visibility.
Support:
00E Condition C in Table NY2C-4 comprises the distances
					 associated with Condition B with an advisory speed equal to the posted or
					 85th-percentile speed. (e.g., The Condition C
					 distance for 40 mph is 150 ft.)
Guidance:
00F
Warning signs should be placed so that they
					 provide an adequate PRT. The distances contained in Table NY2C-4 should be used
					 as guides in determining advance posting distances, and should be applied with
					 engineering judgment. Warning signs should not be placed too far in advance of
					 the condition, such that drivers might tend to forget the warning because of
					 other driving distractions, especially in urban areas.
00G
Warning signs that advise road users about
					 conditions that will likely not require a reduction in speed should be placed
					 in accordance with Condition C distances.
00H
Warning signs that advise road users about
					 conditions that are not related to a specific location, such as Deer Crossing
					 or SOFT SHOULDER, should be installed in an appropriate location, based on
					 engineering judgment, since they are not covered by Table
					 NY2C-4.
00I
The values shown in Table NY2C-4 should be
					 suitably increased on downgrade approaches to accommodate the greater
					 deceleration distances involved. For moderate downgrades (generally five to
					 eight percent), the values should be increased about 25 percent, and for
					 steeper downgrades (more than eight percent), they should be increased about 50
					 percent.
Option:
00J On steep upgrades (more than eight percent), the values
					 may be decreased approximately 20 percent.
00K Estimated grades and 85th
					 percentile approach speeds are usually sufficient, and may be used in
					 determining advance posting distances.
Guidance:
00L
Minimum spacing between warning signs with
					 different messages should be based on the estimated PRT for driver
					 comprehension of, and reaction to, the second sign.
00M
The effectiveness of the placement of warning
					 signs should be periodically evaluated under both day and night
					 conditions.
Table NY2C-4. Guidelines for Advance Placement of
					 Warning Signs
Posted or
								  85th-Percentile Speed (mph)
Advance Placement Distance
								  (ft)
1
Condition A: Speed reduction and lane
								  changing in heavy traffic
2
Condition B: Deceleration to the listed
								  advisory speed (mph) for the
								  condition
4
Condition C: No speed reduction
								  necessary
5
5
0
3
15
20
25
30
35
40
45
50
55
60
65
70
75
20
410
115
110
105
90
75
-
-
-
-
-
-
-
-
-
-
-
25
515
155
160
150
135
120
95
-
-
-
-
-
-
-
-
-
-
30
620
200
205
195
185
165
140
110
-
-
-
-
-
-
-
-
-
35
720
250
255
245
235
215
190
160
130
-
-
-
-
-
-
-
-
40
825
305
320
310
295
280
255
225
190
150
-
-
-
-
-
-
-
45
930
360
380
370
360
340
315
285
255
210
165
-
-
-
-
-
-
50
1030
425
455
450
435
415
390
360
330
285
240
185
-
-
-
-
-
55
1135
495
530
520
505
490
460
435
400
355
315
255
205
-
-
-
-
60
1280
570
605
595
585
565
540
510
475
435
390
335
280
220
-
-
-
65
1365
645
670
690
675
660
630
605
570
525
485
425
375
315
240
-
-
70
1445
730
785
775
765
745
720
690
660
615
570
515
460
400
325
260
-
75
1545
820
880
870
855
840
810
785
750
705
660
605
550
495
420
350
275
Footnotes
1 The distances have not been modified to account for sign
					 legibility.
2 Typical conditions are locations where the road user must
					 use extra time to adjust speed and change lanes in heavy traffic because of a
					 complex driving situation. Typical signs are Merge and Right Lane Ends. The
					 distances are taken from the 2004 AASHTO Policy, Exhibit 3-3, Decision Sight
					 Distance, Avoidance Maneuver E.
3 Typical condition is the warning of a potential stop
					 situation. Typical signs are Stop Ahead, Yield Ahead, Signal Ahead, and
					 Intersection Warning signs. The distances are taken from the 2004 AASHTO
					 Policy, Stopping Sight Distance, Exhibit 3-1.
4 Typical conditions are locations where the road user must
					 decrease speed to maneuver through the warned condition. Typical signs are
					 Turn, Curve, Reverse Turn, or Reverse Curve. The distances are determined by
					 providing a 2.5 second PRT and a vehicle deceleration rate of 10
					 ft/second2.
5 Typical signs are Added Lane, Road Narrows, Divided
					 Highway, and Condition B signs displayed without an advisory
					 speed.