As per the state laws, there are certain South Dakota drunk driving penalties that you may have to face when you get convicted under dui charges. All drivers who are operating vehicle in the state of South Dakota must also abide by the implied consent law, as per which, you cannot refuse to take the field sobriety test when asked by the traffic officer at the time of dui stop. If you refuse, you will attract additional mandatory penalties that generally include immediate suspension of your driving license for twelve months. Refusal to take the test is treated as a separate case and attracts another court hearing for it.