No person shall grab or otherwise hang on to the exterior portion of any motor vehicle for the purpose of obstructing or hindering the free passage of said motor vehicle or for the purpose of being pulled along by said motor vehicle, provided that this subchapter shall not be construed to prohibit the normal operation of a motorcycle, bicycle, or other similar motor vehicle or the towing of one motor vehicle by another.
(Prior Code, § 682.02) Penalty, see § 95.99