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Quick Access Links

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Videos

  • AASHTO R 18 2026: What Changed and Why It Matters

  • AASHTO re:university Webinar Series: A Behind the Scenes Look at Assessment Scheduling

  • AASHTO re:university Webinar Series: Proficiency Sample Reports Explained

  • AASHTO re:university Webinar Series: Management Review: Your “State of the Laboratory” Address​

  • AASHTO resource Overview


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FEATURED DOCUMENTS

      
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InFocus
  • Proficiency Sample Ratings: Being Average Has Never Been So Good

    So you opened up your email notification to see that the latest AASHTO re:source proficiency sample ratings were just posted, you log into the website to view your ratings (Figure 1), and you see ratings of **, -5, -3, 5,4. You think to yourself, "I know that 4 and 5 are good, but what about the negative numbers? Those are below 3, so they must be bad... and what are the stars for? I doubt they're like the stars that my elementary school teacher used to give me... and what is this repeatability rating?"
    Full story
  • Top 6 Uses of the AASHTO re:source Proficiency Sample Program

    Infographic: Here are the top ways you can use our Proficiency Sample Program.
    Full story

Copies of standards can be purchased through the AASHTO Store or ASTM International's Standards & Publications

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