One-way bump / Traffic safety facility

One-way bump does not block vehicles which go to the right direction because the one-way bump will be folded to ground smoothly by the force of the vehicle’ weight and direction through the inclined side of the bump. While the vehicle is passing over the bump, the bump will be kept folded. After passing over, the bump will be gradually returned to its original shape by a pneumatic actuator. On the other hand, if the vehicle approaches to the bump and tries to pass over it to wrong direction, the bump which is not inclined (upright barrier edge) will not allow the vehicle to pass over.