| 摘要 |
In general, a vehicle's occupant receives a kinetic energy transfer similar to that of the vehicle itself. As an automobile collides with an object, passengers collide with the interior of the automobile, and the internal organs collide with the body wall or are sheared from anatomic attachment, this project keep on relativity constant acceleration for passenger with gradual deceleration for them, without acute stop, as consequence prevent acceleration deceleration trauma resulted from frontal or rear impact, through fixation wheels at the corners of the chairs, that catches the lower fixed on the board sheet by a certain mechanism, which based on supportive cylinders fixed on the board sheet, which rotate freely when upper wheels rotates at addition to new fixation of the seat belt.
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