Section Trans 305.52 - Coupling devices(1) When 2 or more vehicles are operated in combination, the coupling devices connecting the vehicles shall be designed, constructed and installed and the vehicles shall be designed and constructed, so that when the combination is operated in a straight line on a level, smooth, paved surface, the path of the towed vehicle will not deviate more than 3 inches to either side of the path of the vehicle that tows it.(2) Coupling devices and safety devices shall meet the requirements of s. 347.47, Stats. Note: Ch. Trans 308 establishes requirements as to the type, design and strength of couplings, safety chains, leveling bars and cables required by s. 347.47, Stats., on trailers, semitrailers and mobile homes.
(3) When used as part of a fifth wheel assembly on a truck tractor, the king pin shall fit snugly into the upper and lower halves, but may not bind.Wis. Admin. Code Department of Transportation Trans 305.52
Cr. Register, February, 1996, No. 482, eff. 3-1-96; am. (3), Register, October, 1997, No. 502, eff. 11-1-97.