US lawWashingtonStatutesTitle 46Chapter 04490RCW 46.04.490RCW 46.04.490: Road tractor.Last amended: 1961Year: 2026Length: 22 wordsOfficial source "Road tractor" includes every motor vehicle designed and used primarily as a road building vehicle in drawing road building machinery and devices.PreviousRCW 46.04.485NextRCW 46.04.500