MUTCD W1-5: Horizontal Alignment Signs

The W1-5 sign is covered in Section 2C.07 of the Manual on Uniform Traffic Control Devices, 11th Edition. Below are the provisions from that section that describe when the sign is used and how it is placed.

What it means and when it is used

• Standard · Required (shall)
  If Table 2C-4 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 recommended or allowed by the provisions of this Section.
• Guidance · Recommended (should)
  A Turn (W1-1) sign should be used instead of a Curve (W1-2) sign in advance of a horizontal curve that has an advisory speed of 30 mph or less.

Placement and mounting

• Option · Permitted (may)
  A NEXT XX MILES (W7-3aP) supplemental distance plaque (see Section 2C.61) may be installed below the Winding Road sign where continuous roadway curves exist for a specific distance.Table 2C-4 . Application of Traffic Control Devices for Changes in Horizontal Alignment A - Determination of the Need for Devices for Changes in Horizontal Alignment1 Roadway TypeAADT Less than 1,0001,000-2,999 3,000-3,999Greater than…
• Guidance · Recommended (should)
  When the Hairpin Curve sign or the 270-degree Loop sign is installed, either a One-Direction Large Arrow (W1-6) sign or Chevron Alignment (W1-8) signs should be installed on the outside of the turn or curve.

Where to read the rest

• Full text: MUTCD Section 2C.07: Horizontal Alignment Signs
• Minimum sign sizes by roadway type are in the size section for this chapter: Section 2C.03
• Mounting height, lateral offset and retroreflectivity for any sign: MUTCD sign placement guide

Related signs in Section 2C.07