| 摘要 |
A safety vehicle bumper includes a bumper mounted on two guide rods secured to several driving pistons reciprocating in at least one set of twin cylinders, which bumper can be operatively extended outwardly to prevent a close hit on a car body by another object by deeply treading a brake pedal for pneumatically or hydraulically moving the piston and the secured guide rods and the bumper outwardly for safety purpose.
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