A safety device for a vehicle, capable of relaxing a collision load acting on a colliding body. The safety device (10) for a vehicle has colliding body receiving sections (24), and opposite longitudinal ends of each colliding body receiving section (24) are bent to form legs (26) having ends (26A). The ends (26A) are fixed to side frames (16) on the vehicle body side to form impact absorption members (22). The safety device (10) is adapted so that, while supporting a collision load, the impact absorption members (22) are displaced to absorb collision energy of the colliding body. The impact absorption members (22) can produce displacement regions that acts against an increase in the displacement in the direction of collision to suppress an increase in supporting load.