Judicial power lies with the Supreme Court and lower courts, such as high courts, district courts, and summary courts. The Supreme Court consists of a chief justice and 14 other justices, all of whom are appointed by the cabinet. Most cases are handled by district courts. There are also summary courts, which deal with problems like traffic violations. A lay judge system was introduced in May 2009. Under this system, six adult citizens (20 or over) are chosen at random to act as lay judges in criminal cases tried in district courts.