The objective of this synthesis was to document current state department of transportation (DOT) practices, funding, policies, management techniques, tools, and workflows of product evaluation
processes. A common practice among DOTs is to evaluate product potential and long-term performance through product evaluation programs. However, there is no standard approach to product, and agencies (1) have developed their methods and procedures, (2) may or may not have staff or funding dedicated to the product evaluation process, or (3) rely on other agencies’ approved/qualified product lists.

This synthesis gathered information through a literature review, a survey of DOTs, and follow-up interviews with selected DOTs. Seven case examples provide additional information on product evaluation programs and processes. This information also includes details on product evaluation timelines; benefits and challenges; evaluating proprietary, environmental, and Buy America/Build America products; and lessons learned. 

Christofer M. Harper, of Black Dog Consultants, LLC, Daniel Tran, of Tran and Associates, LLC, and Roy E. Sturgill, Jr., of Blue CyClone, LLC, collected and synthesized the information and wrote the report. The report is accompanied by Appendices D–L. These materials can be found on the National Academies Press (nap.nationalacademies.org) webpage for NCHRP Synthesis 616: State DOT Product Evaluation Processes under “Resources.” The members of the topic panel are acknowledged on page iv. This synthesis is an immediately useful document that records practices that were acceptable within the limitations of the knowledge available at the time of its preparation. As progress in research and practice continues, new knowledge will be added to that now at hand.