Refresh your memory on basic road rules and techniques using our fun and easy Tennessee 4-Hour Defensive Driving Course. Our animated guide, Sam, will lead you through all 6 chapters. If you fail the final exam, you can retake it for free until you pass. After simple signup, you can begin instantly. Upon completion, your FREE certificate will be on the dashboard. Download and print it, then send it to the county clerk’s office where you received your citation. We are approved by the TDOS. However, you will need to ask your particular county if they accept online certification.