HB 1714 -- All-Terrain Vehicles Sponsor: Cunningham (86) This bill expands the definition of "all-terrain vehicle" to include any motorized vehicle manufactured and used exclusively for off-road use which is 84 inches or less in width, has four or more wheels and/or tracks, transports persons or cargo, has a steering wheel for control, and has a top-speed capability of 24 to 50 miles per hour.Copyright (c) Missouri House of Representatives