University of Michigan Mott Poll on Children's Health: E-Bikes: Unsafe or Uncertain? - Sarah Clark, Mott Poll Co-Director - Electric bicycles, also known as e-bikes, offer teens and pre-teens a new option for transportation and recreation. Different classes of e-bikes range in size, weight and speed. So how do parents feel about their kids riding e-bikes? The C.S. Mott Children’s Hospital National Poll on Children’s Health asked a national sample of parents of children 11-18, and here's what they found out.