If your question is how long the prosecution has until it files a case, it depends. If this is your first DUI offense, the case must be filed within one year from the date of the offense. Fore example, if the alleged drunk driving offense occurred on April 1, 2013, the case could be brought as late as April 1, 2014. If you have priors and/or there are circumstances that allow for a felony filing, the general time limit is three years from the date of the offense.
Answered on Jul 09th, 2013 at 10:15 PM