Traffic Control System
Signal Control
City centers / Sub-centers
![](/english/wp-content/uploads/sites/2/2021/10/index_ph3.jpg)
Their major functions are linked with those of the headquarters centers, including the transmission of collected traffic information.
Traffic control centers in neighbouring prefectures
![](/english/wp-content/uploads/sites/2/2021/10/index_ph2.jpg)
Other agency centers
![](/english/wp-content/uploads/sites/2/2021/10/index_ph1.jpg)