SB 525 - This act modifies the definition of all-terrain vehicles by increasing the vehicle's unladen dry weight from 1,000 pounds to 1,500 pounds. The definition is also modified by stating that an ATV is a vehicle with four or more nonhighway tires (current law uses the term low pressure tires). The act also provides a definition for the term "recreational off-highway vehicle" for purposes of Missouri's titling and registration laws. Under the act, a recreational off-highway vehicle is any motorized vehicle manufactured and used exclusively for off-highway use which is 60 inches or less in width, with an unladen dry weight of 1,500 pounds or less, traveling on four or more nonhighway tires, with a nonstraddle seat, and steering wheel, which are subject to the same registration requirements and trail use as all-terrain vehicles. STEPHEN WITTE