MUTCD Official MUTCD Stop R1-1 Sign

Available in 5 sizes:

18 x 18 - Perfect size for bicycle traffic on bike routes, lanes and shared pathways

24 x 24 - Ideal size for privately owned parking lots with low traffic volume and private roadways

30 x 30 - The minimum standard size required for official street and conventional roads

36 x 36 - The Minimum standard size required for multi-lane approaches and high speed intersections

48 x 48 - Great for rural high-speed roadways, larger stop signs are recommended to ensure visibility and provide adequate reaction time for drivers

Section 2B

02 The STOP sign shall be an octagon with a white legend and border on a red background.

Sect. 2B.03 to 2B.04

07 Where side roads intersect a multi-lane street or highway that has a speed limit of 45 mph or higher, the minimum size of the STOP signs facing the side road approaches, even if the side road only has one approach lane, shall be 36 x 36 inches.

08 Where side roads intersect a multi-lane street or highway that has a speed limit of 40 MPH or lower, the minimum size of the STOP signs facing the side road approaches shall be as shown in the Single Lane or Multi-lane columns of Table 2B-1 based on the number of approach lanes on the side street approach.

Guidance:

09 The minimum sizes for regulatory signs facing traffic on exit and entrance ramps should be as shown in the column of Table 2B-1 that corresponds to the mainline roadway classification (Expressway or Freeway). If a minimum size is not provided in the Freeway column, the minimum size in the Expressway column should be used. If a minimum size is not provided in the Freeway or Expressway Column, the size in the Oversized column should be used.

Section 2B.05

04 At intersections where all approaches are controlled by STOP signs, an ALL WAY supplemental plaque (R1-3P) shall be mounted below each STOP sign. The ALL WAY plaque (see Figure 2B-1) shall have a white legend and border on a red background. The ALL WAY plaque shall only be used if all intersection approaches are controlled by STOP signs.Supplemental plaques with legends such as 2-WAY, 3-WAY, 4-WAY, or other numbers of ways shall not be used with STOP signs.