MS SB2457

Revises the definition of "off-road vehicle" to include all-terrain vehicles, dirt bikes, and recreational off-highway vehicles.

Redefines "all-terrain vehicle" (ATV) to increase unladen dry weight limit from 600 pounds to 1,000 pounds or less and removes requirements for straddling seat and handlebar steering.

Adds new category "recreational off-highway vehicle" defined as motorized vehicles 65 inches or less in width, weighing 2,000 pounds or less, with four or more nonhighway tires.

Requires persons operating off-road vehicles on public property to possess either a valid driver's license or a safety certificate from approved courses taught by the Cooperative Extension Service or other Department of Public Safety-approved organizations.

Mandates helmet compliance with federal Motor Vehicle Safety Standard No. 218 for all persons under 16 years old operating or riding on off-road vehicles on public property; effective July 1, 2013.