Why Escalators Have Side Brushes 😱🛗

Most people think the brushes on escalators are there to clean your shoes, but if you stand too close, they're actually designed to bother you on purpose. Because the most dangerous part of an escalator is the narrow moving gap beside the steps. If shoelaces slip inside, the powerful metal machinery underneath can drag you in instantly. That's why the stiff bristles keep scraping against your shoes. They're training your body to stay away from the hidden trap beside your