Information on foreign research projects in surface transportation noise abatement was collected from both individuals and organizations. These contacts were queried on the research they either were conducting or funding and the names and addresses of other surface transportation noise researchers. In total, some 700 researchers were contacted. They were asked to respond with information about research projects that deal with: highway vehicle noise control (trucks, buses, cars, etc.); vehicle component noise control (engines, exhaust mufflers, cooling systems, power trains, tires, etc.); roadway surface materials, tire/road interaction; path control (barriers, insulation, highway planning and land management); highway noise analysis (prediction models, propagation theory, etc.); rail noise (guided mass transit, light rail, elevated structures, wheel/rail interaction); off road and recreational vehicle noise; measurement, monitoring and enforcement research. From these contacts, 294 surface transportation noise research projects were identified.