SDDOT evaluations may be inadequate or may go unreported. Different types of products require different evaluations. If a specific group was responsible for a grouping of product evaluations, results could be shared and would be done on a timely basis.
Furthermore, relying on other states endorsement is difficult, because endorsements are not easily interpreted. Several national programs, including Civil Engineering Research Foundations Highway Innovative Technology Evaluation Center (CERFs HITEC) and National Transportation Product Evaluation Program (NTPEP) have been established for certain classes of products, but to date the Department has not utilized the results systematically.
A standard product evaluation guideline and a product report with possible recommendations need to be developed.