With nearly every job, some restrictions may prevent you from doing the job correctly, efficiently, and effectively. With commercial driving, you are not only risking your life while driving on the road, but you are also caring for the lives of other drivers that are around you. With that being said, yes there are some DOT restrictions for commercial drivers, and they can include: • Diabetes, especially if you are taking injectable insulin • 20/40 correctable vision in both eyes – DOT commercial driving does not allow their drivers to have contact lenses • Usage of narcotics or any other habit-forming drugs