A statute of limitation is a law that establishes how long people have to file a legal claim of a certain type in a state. In Colorado, for class 1 and class 2 misdemeanor traffic offenses, there is a one-year statute of limitations. So, after one year passes for these types of traffic offenses, if you have not been criminally prosecuted, under Colo. Rev. Stat. § 16-5-401 2019 then it is most likely the state cannot prosecute you.