![]() ![]() ![]() Horizontal Alignment Warning signs may also be used on other roadways or on arterial and collector roadways with less than 1,000 AADT based on engineering judgment. In advance of horizontal curves on freeways, on expressways, and on roadways with more than 1,000 AADT that are functionally classified as arterials or collectors, horizontal alignment warning signs shall be used in accordance with Table 2C-5 based on the speed differential between the roadway's posted or statutory speed limit or 85th-percentile speed, whichever is higher, or the prevailing speed on the approach to the curve, and the horizontal curve's advisory speed. Horizontal Alignment SignsĪll square/diamond warning signs have a minimum sign size of 30" x 30". See Section 2C.06 for roadways with less than 1,000 AADT. Note: Required means that the sign and/or plaque shall be used, recommended means that the sign and/or plaque should be used, and optional means that the sign and/or plaque may be used. Turn (W1-1), Curve (W1-2), Reverse Turn (W1-3), Reverse Curve (W1-4), Winding Road (W1-5), and Combination Horizontal Alignment/Intersection (W1-10) (see Section 2C.07 to determine which sign to use)Ĭhevrons (W1-8) and/or One Direction Large Arrow (W1-6)Įxit Speed (W13-2) and Ramp Speed (W13-3) on exit ramp Horizontal Alignment Sign Selection Type ofĭifference Between Speed Limit and Advisory Speed MUTCD Example of Warning Signs for a Turn Table 2C-5. Reduced Speed Limit Ahead (W3-5, W3-5a MUTCD, Section 2C.38)Ī Reduced Speed Limit Ahead (W3-5 or W3-5a) sign should be used to inform road users of a reduced speed zone where the speed limit is being reduced by more than 10 mph, or where engineering judgment indicates the need for advance notice to comply with the posted speed limit ahead.įigure 5. Speed Limit signs indicating the statutory speed limits shall be installed at entrances to the State.Additional Speed Limit signs shall be installed beyond major intersections and at other locations where it is necessary to remind road users of the speed limit that is applicable. ![]() Speed Limit signs shall be located at the points of change from one speed limit to another.The speed limits displayed shall be in multiples of 5 mph.The Speed Limit sign shall display the limit established by law, ordinance, regulation, or as adopted by the authorized agency based on the engineering study.Speed Limit Signs Speed Limit (R2-1 MUTCD, Section 2B.13) Adding a strip of retroreflective material to the sign support.Doubling-up by adding a second identical sign on the left-hand side of the roadway.In a situation where it is desired to enhance a sign's conspicuity, the following are among the methods that may be used:.MUTCD Examples of Enhanced Conspicuity for Signs (MUTCD, Section 2A.15) Enhancing Sign Conspicuity Cost Effectively (MUTCD, Figure 2A-2).įigure 4. In terms of vertical height, the bottom of the sign should be installed at least 5 feet above the ground elevation at the edge of pavement. MUTCD Roadside Placement (MUTCD Figure 2A-2)įor a typical rural road with no shoulder, the sign should be placed on the right-hand side of the roadway, 12 feet laterally from the edge of the traveled way.
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