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30″x30″ STOP Sign

Item #: STOP-R1-1 30HI (30"x30" HIP) or R1-1 is MUTCD sign designation for all STOP signs

Price: 30"x30" High Intensity Prismatic Reflective - $68.50 (See Size/Price Chart for more STOP sign prices)

Product Description

Click here for Size/Price Chart

30″x30″ STOP Sign with 3m High Intensity Prismatic (HIP) Reflective Sheeting

  • MUTCD Sign Designation – WSDOT R1-1
  • The 30″x30″ HIP STOP sign is MUTCD compliant
  • The most common STOP sign


    • Engineer Grade Reflective Sheeting – Basic reflectivity grade. Provides adequate visibility and reflection when light hits the surface. Ideal for parking lots and driveways.
    • High Intensity Prismatic Reflective Sheeting – Offers superior reflectivity. Enhanced visibility when approached at an angle. MUTCD compliant. Most commonly used on roadways and high traffic areas.
    • Diamond Grade Reflective Sheeting – The brightest and most durable sheeting. When approached at around 90 degrees, the surface returns about 60% of light due to retro-reflectivity at the highest level, resulting in optimum visibility for the busiest and most dangerous roadways. This grade exceeds all MUTCD expectations.

Example of sheeting grades when hit with light

    • 18″x18″ – Not for roadways or public areas. Use for off-street or private areas. Not MUTCD compliant.
    • 24″x24″ – Minimum size for roadways. Not MUTCD compliant.
    • 30″x30″ – Conventional roadway. Most common size. MUTCD compliant when sheeted with HIP or better.
    • 36″x36″ – Expressway and higher speed roadways.


  • 0.080 mil thick aluminum
  • White Reflective Sheeting
  • “Stop sign” red
  • Standard Octagon shape
  • 3/8″ pre-punched holes centered, from top & bottom for easy mounting

Looking for something else? Maybe something custom that is specific to only your needs? Check out Alpine Product’s very own Custom Sign Shop and see what it has to offer!

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