No person shall ride any horse or other animal, or drive or impel any machine, including a bicycle, tricycle, velocipede, perambulator, hand-cart, or motor-car on to or upon any wharf or jetty except with the permission of the wharf manager: Provided, however, that such machine may be taken across any such wharf to or from any ship moored thereto for the purpose of being loaded or unloaded thereat.