Age-based guidelines for all-terrain vehicles don't ensure the safety of young riders, according to preliminary results from an ongoing study at the University of Kentucky. Current national guidelines establish appropriate engine size based on age, but they don't address the range of sizes and shapes that kids come in. And that can spell trouble for young drivers, researchers said. If arms are too short, drivers can't steer well, said David Pienkowski, a professor of biomedical engineering at UK. If their hands are too small, they can't brake well. If their torso is too short, they can't see very far ahead. "And remember, you're moving at 30 miles per an hour," Pienkowski said. ...
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