One mandatory term of drunk driving probation is that the defendant does not commit any additional criminal offenses while on probation. This includes vehicle code violations such as: Driving without a license, or Driving without valid auto insurance. Another offense that is problematic for people on DUI probation is Vehicle Code 14601.2 VC, driving on a license suspended due to DUI. VC 14601.2 carries a mandatory jail sentence and heavy fines. It is also what's known as a priorable offense. This means that the penalties increase with each subsequent VC 14601.2 conviction. And doing any of the above can lead to charges for the probation violation itself as well as the other criminal offense.