For years, federal regulators, doctors and the all-terrain vehicle industry have agreed: Children should not ride ATVs designed for adults.
But in most states, the practice is legal.
In Minnesota, lawmakers even dropped the age limit from 16 to 12 for driving adult ATVs, with a nod to safety: They require children to take a training class.
Across the country, thousands of children have been injured or killed riding ATVs, the majority on adult vehicles. But 40 states have laws and rules allowing children younger than 16 to drive ATVs designed for adults. Nineteen have no age limit. Some with age restrictions, including Minnesota, spend little effort trying to enforce them.
Minnesota state Rep. Tom Hackbarth, a Republican who co-sponsored the state's current ATV regulations, contends that children will ride adult ATVs, regardless of the law or ATV warning labels. So Minnesota's requirements for safety training and parental supervision are the best way to protect them.
"I'm not saying the manufacturers are wrong, but they shouldn't be saying we're wrong either," Hackbarth said.
David Downing, manager of Iowa's off-road vehicle program, said many children younger than 16 are fit to ride adult-sized ATVs. "What we have is a common-sense approach,'' he said of Iowa's regulations, which are similar to Minnesota's. "We're a farm state. We have big kids."
But that approach clashes with mandates from the federal Consumer Product Safety Commission (CPSC), which regulates ATVs. Its view: Children younger than 16 are too impulsive and lack the physical strength and maturity to operate a powerful and sometimes unstable vehicle.