Maryland Transportation Section 21-1203

      (a)      The operator of a bicycle or a motor scooter may ride the bicycle or motor scooter only on or astride a permanent and regular seat securely attached to it.

      (b)      A bicycle may not carry any passenger unless it is designed for and equipped with a seat securely attached to it for each passenger.

      (c)      A motor scooter may not carry any passenger unless it is designed for and equipped with a seat securely attached to it and footrests for each passenger.