The Knowledge Test You can take the knowledge test at driver examination stations located throughout the state. The knowledge test contains multiple choice and true or false questions that evaluate your knowledge and understanding of Minnesota traffic laws and road signs. The knowledge test may be offered on paper or on a computer. At exam stations The Vision Screening Your eyes will be screened when you apply for, or renew, your driver’s license or instruction permit. This is not a medical examination. It is a screening to determine whether your vision meets minimum standards. Your normal or corrected vision must be at least 20/40, and your peripheral vision must be at least 105 degrees. If your peripheral vision is less than 105 degrees or you fail the vision screening, you will be asked to see an eye doctor and return the doctor’s report to the Driver and Vehicle Services Driver Evaluation Unit. The purpose of the report is to determine whether you see well enough to drive safely or if vision correction or other restrictions are needed.