Research Center

Product Evaluation Program

Approved Products List

The Arizona Department of Transportation (ADOT), through its Product Evaluation Program, maintains the Approved Products List (APL). The list documents products that have been evaluated under ADOT specifications and approved for potential ADOT use. The U.S. government and the state of Arizona do not endorse products or manufacturers.

The following acronyms and terms are associated with the APL.

 AASHTO  American Association of State Highway and Transportation Officials
 American Society for Testing and Materials
 Contracts & Specifications
MASH  Manual for Assessing Safety Hardware
NCHRP  National Cooperative Highway Research Program
NTPEP  National Transportation Product Evaluation Program
PCCP  Portland Cement Concrete Pavement
TL2  Test Level 2 as defined in NCHRP Report 350 or MASH
 Test Level 3 as defined in NCHRP Report 350 or MASH
TL4  Test Level 4 as defined in NCHRP Report 350 or MASH
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