• AASHTO's Product Evaluation Listing (APEL) - The American Association of State Highway and Transportation Officials (AASHTO), maintains a database of propriety products utilized in the transportation infrastructure. The fifty (50) states, Washington, DC and Puerto Rico contribute to the database from their experience with the performance of proprietary products.
  • AASHTO's National Transportation Product Evaluation Program - The National Transportation Product Evaluation Program (NTPEP) was established in 1994 as an engineering technical service program to pool the professional and physical resources of AASHTO's member departments to test transportation materials of their common interest.
  • American Traffic Safety Services Association (ATSSA) - Since 1969, ATSSA has represented companies and individuals in the traffic control and roadway safety industry. Over 1,600 ATSSA members provide the majority of features, services and devices used to make our nation's roadways safer. These include pavement markings, road signs, work zone traffic control devices, guardrail, and other roadside safety features.
  • NTPEP DataMine - NTPEP DataMine is the online repository of data and audit reports for all NTPEP services. This database provides the tools for performing queries that will assist you in analyzing and reporting on current and past NTPEP evaluations. The application allows NTPEP Testing Facilities and Auditors to enter real time data online. Also our industry partners and the NTPEP administration may review product information and preliminary reports online for timely reporting of all evaluations.