This thesis aims for the design and analysis of bumper model using different geometrical shapesrnfor optimizing a three wheeled vehicle (Bajaj) through addressing the factors that contribute torncausalities and material losses sustained by the rising traffic accident. The study focuses onrndesign the bumper model for absorbing kinetic energy during collision and sudden accident.rnInvestigation of the most suitable and optimized geometrical design of three wheeled bumper atrnconceptual design stage is carried out using Computer-Aided Engineering. For this reason, thernfocus of the design is on increasing energy absorption at the moment of impact and onrnminimizing accidental failure of occupants and damage of the components of the vehicle. rnMany researchers have identified that a three wheeled vehicle accident causes a catastrophicrnfailure in human as well as vehicle. So, material selection and design parameter will minimize orrnreduce the occurrence of an accident. rnThis thesis demonstrates the deformation as well as the total energy absorption of the bumperrnmodel subjected to an impact velocity of different magnitude and geometry with a rigid wall forrnanalysis. During the impact analysis maximum Von Misses stress, total deformation, internalrnenergy absorption and specific energy absorption is also carried out by Ansys Explicit DynamicrnAnalysis for modeling and analysis of the complex bumper geometry for different geometricalrnshapes. The model was analyzed by explicit dynamic analysis using ANSYS Workbenchrn16.Among the two bumper model geometry (hexagonal and rectangular shapes), which are usedrnfor the explicit dynamic analysis, hexagonal geometrical bumper model possess lower VonMissesrnrnstress value, highest internal energy, highest specific energy absorption and the lowestrndeformation, in view of rectangular geometry. This demonstrates that that the hexagonalrngeometry is better than rectangular bumper model.