Description

MUTCD Stop Sign

The stop sign is a standardized sign listed in the Manual of Uniform Traffic Control Devices (MUTCD) with a designation of R1-1. Stop signs are to be used when a full stop is required at an intersection for public roads, parking lots, and private roadways.

First appearing in 1915, the original stop sign featured black text on a white background. The octagonal shape was introduced a few years later in1922 in order to standardize the shape of the sign.

During a 31 year period from 1924-1955, stop signs were yellow with black text. It wasn’t until 1955 when the red signs we see today were released to be consistent with red traffic lights.

Which Size Do I Choose?

Available in 5 sizes:

• 12 x 12” – Novelty size that’s great for gifts and home decor
• 18 x 18″ – Used for bicycle traffic control on bike paths and shared-use paths
• 24 x 24″ – Great for smaller parking lots with minimal traffic volume and private roadways
• 30 x 30″ – The minimum size required for official street applications
• 36 x 36″ – Minimum size for multi-lane approaches and hazardous intersections

Which Material Do I Choose?

Available in 3 reflective materials:

• Engineering Grade Prismatic (Type I) – great for parking lots and non-official applications
• High Intensity Prismatic (Type IV) – the most common choice for public road use
• Diamond Grade Prismatic (Type IX) – the best choice for public roads, especially dangerous intersections