MUTCD R1-1: STOP Sign and ALL-WAY Plaque

The R1-1 sign is covered in Section 2B.04 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)
  When it is determined that a full stop is always required on an approach to an intersection, a STOP (R1-1) sign (see Figure 2B-1 ) shall be used.
• Standard · Required (shall)
  Secondary legends shall not be used on STOP sign faces.

Placement and mounting

• Standard · Required (shall)
  At intersections where all approaches are controlled by STOP signs (see Section 2B.12), an ALL-WAY (R1-3P) supplemental plaque (see Figure 2B-1 ) shall be mounted below each STOP sign. The ALL-WAY plaque shall have a white legend and border on a red background.
• Option · Permitted (may)
  The EXCEPT RIGHT TURN (R1-10P) plaque (see Figure 2B-1) may be mounted below the STOP sign if an engineering study determines that a special combination of geometry and traffic volumes is present that makes it possible for right-turning traffic on the approach to be allowed to enter the intersection without stopping.

Where to read the rest

• Full text: MUTCD Section 2B.04: STOP Sign and ALL-WAY Plaque
• Minimum sign sizes by roadway type are in the size section for this chapter: Section 2B.03
• Mounting height, lateral offset and retroreflectivity for any sign: MUTCD sign placement guide

Related signs in Section 2B.04