http://www.cpsc.gov/Global/Safety%20Education/Safety-Information-Centers/ATV/State%20ATV%20Information/SouthDakotaLaw.pdf
http://blackhillsbadlands.com/outdoor-recreation/atv-roading
http://gfp.sd.gov/to-do/atv/rules-regulations.aspx
- All ATVs must be titled.
- ATV use on highways is prohibited, except to cross these roads. Four-wheeled ATVs of 200cc or more may be licensed for highway use if they meet motorcycle equipment requirements, and operator has a valid
driver's license.
- No one under 12 and older may operate an ATV in highway ditches