The Koreans created a soft bump for the road

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Engineers from South Korea to create a security bump for highways. The system, called Road Roller System (the road roller system) consists of a sturdy steel tube height 96 cm, between which the plastic rollers, spinning around its axis.
In a collision with cars striker fence flex, assuming the force of impact, and thanks to the twisting rollers, the machine loses momentum and changing the trajectory, always turning sideways to the bump.
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