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School buses | Tayfun Coskun/Anadolu Agency via Getty Images

Why Are There Chains Hanging Under Some School Buses?

Have you ever noticed chains hanging beneath a school bus? They might seem like an odd accessory for a transport vehicle, but they have an important function. These chains are automatic tire chains the driver can deploy to increase traction–all without climbing out of the bus. Do school buses use tire chains? Tire chains were …