SDCL § 32-20-18: Off-road vehicle activity.

For the purposes of §§ 32-20-17 through 32-20-20, engaging in off-road vehicle activity means riding, providing, assisting in driving, or being a passenger on an off-road vehicle. It does not include being a spectator at an off-road vehicle activity unless the spectator is in an unauthorized area and in immediate proximity to the off-road vehicle activity.