Andrzej Chudzikiewicz is a specialist dealing with scientific research in the field of dynamics of rail vehicles, treating the rail vehicle and the track as a rail vehicle-track system. In particular, the areas of his interests are such issues as: driving safety and comfort, wheel–rail contact zone, wear of wheel and rail profiles, identification of phenomena occurring in the vehicle and track, and the modernization of rail vehicles. The tools used in the research are: modeling, simulation analysis, and experimental research. He is the author of over 300 articles published in national and foreign magazines and presented at conferences in Poland and abroad. He is a reviewer of many articles published in such journals as: Applied Sciences, Materials, Sustainability, and Archives of Transport. He cooperates with manufacturers of rail vehicles in Poland, such as: Newag, Pesa. He managed many projects that ended with their implementation into production. He is a co-author of several patents in the field of running systems for rail vehicles. He is a professor at the University of Technology and Humanities, in Radom, Poland.