If you fail the TN Driving Exam, you will not receive your TN Driver's License. Your wait time to take your TN Driving Exam will depend on your score. However, you should not rush retaking the TN Driving Exam after you have failed. You should pay attention to what your examiner indicates as your weaknesses, and you should work upon improving your weaknesses.
Your examiner wants to see that you are capable of driving safely and effectively. During your TN Driving Exam, you want to make sure that you are not driving too quickly or too slowly; you want to accelerate smoothly and gradually. Obey all stop signs and traffic signals, do not tailgate other vehicles and stay in the correct lane. You should also know what various street signs and traffic signals indicate to drivers on the road.