A major impediment to past pavement research efforts was the lack of availability of and access to comprehensive diverse, yet consistent, traffic, materials, structural, and climatic data for various pavement types. One of the basic objectives or goals of the Strategic Highway Research Program (SHRP) was to establish a national pavement performance data base in which to store all of the data being collected or generated, or both, under the Long-Term Pavement Performance (LTPP) Program. Under this program researchers could pursue long-term pavement performance studies by accessing all sorts of data with confidence. The quality assurance approach used in the SHRP-LTPP Information Management System to verify the accuracy and correctness of the data it receives and stores before releasing the data to the public is presented. In addition, the levels of data release are presented and the information sources of benefit to the user are identified.