For decades it has been an accepted fact that accelerated load testing (ALT) is one of the most important means of analyzing pavement behavior. In spite of large costs, high benefit-cost ratios can be expected from ALT research. However, these benefits are often obtained through national research programs that tailor the research to the specific interests of the country concerned. A Pan-European approach would result in a more robust outcome that had wider acceptance, and hence reduce the cost to the individual countries. COST 347 was established in October 2000 under the European Commission with the objective to harmonize the scattered European ALT efforts. The harmonization is expected to lead to more efficient use of ALT research in combined efforts among the different countries participating in COST 347. This includes sharing of results, common testing methods, and co-operative research projects. The results from COST 347 are very promising. A total of 17 European countries participate on a regular basis, so does the TRB Committee on Full Scale/Accelerated Pavement Testing, and close links exist to ALT centers in South Africa, Australia, and New Zealand. Among the direct outcomes of our work are a newsletter, and an e-mail based discussion forum. A co-operation between the HVS Nordic and Denmark regarding ALT research in semi-rigid pavements can also be attributed to COST 347. Among the future developments COST 347 intends to work for the establishment of an international association for ALT.