Fig. 4-1-2-3 shows the trends in the number of juveniles referred by the police for road traffic violations and the number of crackdowns on violations of Road Traffic Law related to motorized vehicles, etc. (the number of notified cases of non-penal offenses and the number of referred cases of penal offenses) since 1966.
  The number of juveniles referred by the police for road traffic violations has decreased substantially since 1987, when the scope of application of the traffic violation notification system was expanded. Since then, the number has tended to decline and reached 85,656 persons (a decline of 4.6% from the previous year) in 2001.
  Meanwhile, the number of crackdowns on juvenile violations of Road Traffic Law peaked at approximately 1.94 million cases in 1985. Since then, however, the number has tended to decline. The number of crackdowns in 2001 was 610,842, of which 527,063 cases (86.3%) were notified as non-penal violations. With respect to the percent distributions of types of violation in penal cases by juveniles in 2001, driving without a license had the largest share (42.1%) in the total number of cases, followed by speeding (26.0%), driving while intoxicated (6.4%), and seating capacity violations (5.0%). As compared with adult cases, the percentage of those driving without a license was significantly higher (5.2% for adults) among juvenile cases.

Fig. 4-1-2-3 Trends in number of juveniles referred for road traffic violations and number of crackdowns on violations of the Road Traffic Law (1966-2001)