TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 328: State Product Evaluation Programs examines the general use of evaluation programs within state departments of transportation (including the use of state specifications, and laboratory and field testing results), the national programs that exist to support the integration of new products and technologies into practice, and the general issues associated with conducting objective evaluations of new products and implementation of approved products.

Some vols. include supplemental journals of "such proceedings of the sessions, as, during the time they were depending, were ordered to be kept secret, and respecting which the injunction of secrecy was afterwards taken off by the order of the House."