Professor Vangi deals with several aspects of machine design (vehicle dynamics, road safety and accident reconstruction, materials, reliability design, stress experimental analysis, non-destructive testing) producing both experimental and theoretical works. In the last fifteen years, he has been researching vehicle dynamics and safety, and road accident reconstruction methods. Specifically, his recent research focuses on methods for evaluation of energy loss during vehicle impact, fuzzy procedure to analyze car-pedestrian accidents and evaluate the whiplash risk, human factor in road accidents.