Section 4191 - Trailers and towed vehicles(a) No vehicle shall be driven upon any highway drawing or having attached thereto more than 1 other vehicle, provided that a vehicle with semitrailer may draw in addition thereto 1 other vehicle, and provided further that driveway operations in transit may transport by means of saddlemount and fullmount mechanisms, utilizing the motive power of 1 of the vehicles in combination. This subsection shall not apply to farm tractors.(b) The draw bar or other connection between any 2 vehicles 1 of which is towing or drawing the other on a highway shall not exceed 15 feet in length from 1 vehicle to the other. Whenever such connection consists of a chain, rope or cable, there shall be displayed upon such connection a red flag or other signal or cloth not less than 12 inches both in length and width. (c) It shall be unlawful to ride in a towed vehicle except when necessary to steer the towed vehicle.(d) This section shall not apply to: (1) Vehicles in a parade when the vehicles are drawn or towed at a speed of less than 20 miles per hour;(2) Trailers which have been designed or modified to carry passengers for sightseeing or public transportation purposes provided that such activity complies with the requirements of the Transportation Authority as provided in Chapter 18 of Title 2.21 Del. C. 1953, § 4189; 54 Del. Laws, c. 160, § 1; 60 Del. Laws, c. 701, §§ 58, 59; 61 Del. Laws, c. 318, § 1; 62 Del. Laws, c. 53, §1.;