South Dakota has deadlines - known as "statutes of limitations" - for filing a lawsuit in court.
In South Dakota, you have three (3) years to file a lawsuit over a car accident. The clock starts running on the day of the accident or incident that caused the harm.
It's very important to know when the statute of limitations on your case ends. If you file a lawsuit after the three-year window has closed, the South Dakota court system will almost certainly refuse to hear your case.