The principal data on special act offenses (including violation of ordinances, hereinafter the same) in 2006 are as follows.

Principal data for 2006 (special act offenses)
                                            Number of persons newly          (percent    (year-on-year change)
                                            received by public                         ratio)
                                            prosecutors offices
[1]   Road Traffic Act violations                         701,360    (84.6%)      (-34,307)       (-4.7%)
[2]   Stimulants Control Act violations              20,144      (2.4%)        (-2,999)      (-13.0%)
[3]   Minor Offenses Act violations                     14,820      (1.8%)       (+4,278)     (+40.6%)
[4]   Immigration Control Act violations            11,552      (1.4%)        (-2,805)      (-19.5%)
[5]   Vehicle Parking Spaces Act violations         9,514      (1.1%)        (-3,637)      (-27.7%)
[6]   Wastes Disposal Act violations                      7,850      (0.9%)        (+1,073)    (+15.8%)
[7]   Firearms and Swords Control Act                 5,990      (0.7%)          (+686)     (+12.9%)
       violations
[8]   Automobile Liability Insurance Act              4,834      (0.6%)         (+419)       (+9.5%)
       violations
[9]   Adult Entertainment Act violations              4,814      (0.6%)         (+703)      (+17.1%)
[10] Poisonous and Deleterious Substances        2,968      (0.4%)          (-872)       (-22.7%)
       Control Act violations
       Others                                                              44,963      (5.4%)
       Total                                                               828,809  (100.0%)      (-35,773)       (-4.1%)
                                                            (Source: Annual Report of Statistics on Prosecution)

Fig. 1-2-1-1  Number of persons newly received by public prosecutors offices for special act offenses (1949-2006)

  Fig. 1-2-1-1 shows the trends in persons newly received by public prosecutors offices since 1949 for special act offenses.
  The total number of special act offenses decreased sharply when the traffic violation notification system came into force in July 1968 and remained on the range of 2 million persons through 1975 to 1984. The number decreased sharply again due to the expansion of the scope of this system in 1987 and has generally been on a declining trend. Meanwhile, the number of special act offenses excluding violations of road traffic related acts has been increasing since 2001.
  Fig. 1-2-1-2 shows the percent distribution of persons newly received by public prosecutors offices for special act offenses excluding violations of road traffic related acts, by type of offense in 2006.

Fig. 1-2-1-2  Percent distribution of special act offenses excluding violations of road traffic related acts by type of offense (2006)