The penalty for second offenses in the District of Columbia for DUI’s and DWI’s include a mandatory minimum jail term of ten days. It’s the only misdemeanor crime in the District of Columbia that carries mandatory minimum jail time. To give you a sense of how serious DC treats DUI second offenses: you could be convicted of assaulting a police officer and destroying property while possessing illegal drugs and the judge could still give you straight probation. On the other hand, you could have a DUI conviction from 14 years ago and get convicted for another DUI where you got pulled over for failing to use a turn signal and blew a .09. In the latter scenario, the judge must sentence you to at least 10 days in jail. The judge will also likely sentence you to a period of supervised probation for one year or more.