DMV uses a point system to rate drivers. You receive demerit points for unsafe driving and safe driving points for good driving. Demerit Points are assigned when you commit a traffic violation.
Different violations carry different point assignments, depending on the seriousness of the offense.
For example, you will receive three demerit points if you make an improper U-turn. However, you will receive six demerit points if you speed 20 miles per hour or more above the posted speed limit. Demerit points remain valid two years from the date you commit an offense. Safe Driving Points are assigned for each full calendar year that you hold a valid driver's license and drive without any violations or suspensions. You may also earn safe driving points by completing a driver improvement clinic if you are 18 years of age or older.