Sec. 198. Except as provided in section 60(a)(2) or 60(a)(3) of this chapter, "wagon" means a vehicle that is:
(1) without motive power;
(2) designed to be pulled by a motor vehicle;
(3) constructed so that no part of the weight of the wagon rests upon the towing vehicle;
(4) equipped with a flexible tongue; and
(5) capable of being steered by the front two (2) wheels.