All-terrain vehicle ( aTV )

In 1988, the All-terrain Vehicle Safety Institute (ASI) was formed to provide training and education for ATV riders. The cost of attending the training is minimal[clarification needed] and is free for purchasers of new machines that fall within the correct age and size guidelines. Successful completion of a safety training class is, in many states, a minimum requirement for minor-age children to be granted permission to ride on state land. Some states have had to implement their own safety training programs, as the ASI program cannot include those riders with ATVs outside of the age and size guidelines, which may still fall within the states' laws.