Summary: This digest summarizes the mission performed October 17-31, 2002, under Transit Cooperative Research Program (TCRP) Project J-3, International Transit Studies Program. The digest includes transportation information on the cities and facilities visited, lessons learned, and discussions of policies and practices that could be applied in the United States. The mission focused on how transit agencies in Poland, Hungary, Romania, and Russia are adapting to the major social and economic changes that have occurred as these countries have moved from centrally planned economies to market-based economies.