§21–1203.

    (a)    The operator of a bicycle or a motor scooter may ride the bicycle or motor scooter only:

        (1)    On or astride a permanent and regular seat securely attached to it; or

        (2)    For an electric low speed scooter, by standing on a platform designed to carry the operator.

    (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.