This appendix contains short descriptions of different certification programs related to materials sampling and testing that were referenced in the literature review. The programs are listed in ...

Citation: Shear, B. R., Whitfield, E., & Nath, K. (2025). Investigating the relationship between sample size and reliability of aggregate test score measures in ...

The Michigan Department of Transportation failed to provide documentation showing proper inspections of aggregates and aggregate suppliers used in road construction projects, according to an audit ...

Certain aspects of quality control testing hasn't changed all that much over the decades. While it is necessary and extremely important, when working with various Departments of Transportation (DOT) ...

The literature review presented in this chapter describes the DOT certification programs and how they were developed in different ways, in part due to the flexibility found in 23 CFR 637B. Included is ...