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In the events of disaster like a fire or earthquake in building, you can't take an elevator. You should evacuate from the disaster by taking the stairs.
But wheelchair users can't go down the stairs. They can't evacuate from the disaster. As a result, they die inside the building.
To solve the problem, Arc Wheelchair puts caterpillar wheels in the rear of wheelchair. In case of fire, the guardian draws the handle connected with the caterpillar so it is able to go down the stairs. In other words, it is the wheelchair that is able to evacuate from the disaster with only one guardian after the disaster in building.
Cheongju-si, South Korea
Seul Min Kim,