Interwest Safety Supply, LLC


R4-1 Do Not Pass Traffic Sign – Diamond Grade Reflectivity | Interwest Safety Supply

R4-1 Do Not Pass



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Maximize road safety and visibility with Interwest’s R4-1 Do Not Pass sign. Available in sizes up to 48″x60″ and crafted with robust .080″, 5052-H38 aluminum, this sign stands the test of time. Choose from Engineer Grade to Diamond Grade reflectivity for unparalleled visibility, day or night. Ideal for DOT and construction projects, our signs meet stringent MUTCD standards, ensuring you stay compliant and your roads stay safe. Don’t compromise on quality – secure your high-grade traffic control solution now.

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