This report deals with two-dimensional motion of vehicles after the collision. The motion of vehicle to the stop from the after collision is clarified by the numerical analysis using equation of motion and equation of equilibrium which deduced as rigid body vehicle. In this numerical analysis, the four-wheel vehicle model was used instead of equivalent two-wheel vehicle model generally used. Then, the motion analysis experiment by the vehicle models with different height of center gravity is earned out for the verification of the numerical analysis. Several analytical results on vehicle motion using the four-wheel model are examined and compared with experimental result.
