The same test was used in 1959 to strike down an Illinois law requiring trucks to have contoured rear fender mudguards rather than the straight mud guard flaps required by most other states (Bibb v Navajo Freight) and in 1978 to invalidate a Wisconsin law that limited truck length to 55 feet at a time when most long haul truck lines had gone to 65 foot trucks (Raymond Motor Transportation v Rice).In United Haulers Assoc. v Oneida-Herkimer Solid Waste… [read post]